Shaw, C. J.
This is a petition for a writ of habeas corpus to bring the petitioner before this court, with a view to his discharge from imprisonment, upon the grounds stated in the petition. We were strongly urged to issue the writ, without inquiry into its cause, and to hear an argument upon the petitioner’s right to a discharge, on the return of the writ. This we declined to do, on grounds of principle, and common and well settled practice. Before a writ of habeas corpus is granted, sufficient probable cause must be shown; but when it appears upon the party’s own showing that there is no sufficient [292] ground primd facie for his discharge, the court will not issue the writ. And on a slight recurrence to the cases, we are of opinion that this is the established rule and practice at common law. Indeed the ordinary course is, for the court applied to, to grant a rule nisi in the first instance to show cause why the writ should not issue. Of course, if sufficient cause is shown, it will be withheld. Blake’s case, 2 M. & S. 428 ; The King v. Marsh, 3 Bulst. 27. And in Hobhouse’s case, 3 B. & Ald. 420, the question came before the court and was fully discussed. It was there considered that, whether the writ of habeas corpus were claimed at common law or under the statute, a proper ground ought to be laid before the court, previously to granting the writ. It is not granted as a matter of course ; and the court will not grant the writ of habeas corpus when they see that, in the result, they must remand the party. The court in that case, which was a commitment by the house of commons, had ganted the writ, in the first instance, upon an urgent claim that it was a matter of right, and some colorable authority cited in support of it, and on its return stated the reasons why it should not have been done.
We think that the same rule and practice have prevailed in this country. In Watkins’s case, 3 Pet. 201, Marshall, C. J., said, “ the writ ought not to be awarded, if the court is satisfied that the prisoner would be remanded.” Indeed, by necessary implication, it is the fair result of the provisions of the habeas corpus act of this common wealth. The Rev. Sts. c. Ill, § 3, require, in all cases of an application for the writ of habeas corpus, that the party imprisoned, or some person in his behalf, shall present a petition, and if held under legal process, or color or pretence of legal process, shall annex a copy of the process, under which the respondent claims to hold and detain him, or make proof by affidavit, that a copy of such a writ or warrant has been applied for, and refused. But why annex a copy of the process, unless it be to enable the court to form an opinion whether the. party is rightly held in custody or not; and why form an opinion in that stage of the proceeding, if it is to constitute no ground for judicial action ? It is urged that this is a writ of right, and therefore grantable without inquiry. But it [293] is not a writ of right in that narrow and technical sense; if it were, the issuing of it would be a mere ministerial act, and the party claiming it might go to the clerk and sue it out, as he may a writ on a claim for land or money. It is a writ of right in a larger and more liberal sense; a right to be delivered from all unlawful imprisonment. Nor does this limit or restrain the full and beneficial operation of this writ, so essential to the protection of personal liberty. The same court must decide whether the imprisonment complained of is illegal; and whether the inquiry is had, in the first instance, on the application, or subsequently, on the return of the writ, or partly on the one, and partly on the other, it must depend on the same facts and principles, and be governed by the same rule of law. It was upon these grounds, that we stated on the presentation of a similar petition, that no sufficient cause appeared upon the petition for granting a writ; and upon further consideration we now repeat, that when it appears on the party’s own showing in the petition, that if brought before the court, he would not be entitled to a discharge, the court will not issue the writ.
We are then to examine the petition, accompanied as it is, by a copy of the warrant under which the marshal of the district claims to hold the petitioner, and the return thereon. It appears that the petitioner has been arrested and is claimed as a fugitive from labor, upon a warrant, issued by George T. Curtis, Esquire, a commissioner of the circuit court of the United States, in pursuance of a law of the United States, and that the deputy marshal has returned the warrant to the commissioner who issued it, and has the body of the petitioner before the commissioner for the purposes expressed in the warrant. .
An obvious question occurs here, namely, how far it is competent for this court, by a writ of habeas corpus to the marshal, to take a prisoner from the custody of another tribunal, court or magistrate, of which the marshal is the executive officer, and after the prisoner has, by the execution and return of the warrant, been placed under the control and direction of such court or magistrate, to be held, discharged, brought in, or [294] remanded. This point has not been noticed in the argument, and is not, perhaps of much importance; and perhaps it might be avoided by an amendment of the petition. But we have thought it worthy of a passing remark, as one of those considerations which presented themselves to our minds after a similar petition had been submitted on a former occasion, indicating that apparently, and on the face of the proceedings, the petitioner was in regular and lawful custody.
It is now argued, that the whole proceeding, as it appears upon the warrant and return, is unconstitutional and void; because, although the act of congress of 1850, c. 60, (9 U. S. Stat. at Large, 462,) has provided for, and directed this course of proceeding, yet that the statute itself is void, because congress had no power, by the constitution of the United States, to pass such a law, and confer such an authority. The ground of argument leading to this conclusion is, that it is not competent for congress, under the power of legislation vested in them by the constitution, to confer any authority, in its nature judicial, upon any persons, magistrates or boards, other than organized courts of justice, held by judges, appointed as such, and to hold their offices during good behavior, and paid by fixed salaries; whereas the commissioners, designated by the law in question, do not hold their offices during good behavior, nor are they paid by fixed salaries. This is the argument.
We are called on to consider two questions: First, whether congress has authority to pass any law on the subject; and second, whether the law actually passed did, in any respect, of which the petitioner had a right to complain, violate the provisions of the constitution. These are grave questions, and it is impossible to approach them without a deep sense of the responsibility which must rest on a judicial tribunal, when called upon to deliberate upon the constitutionality ol any legal enactment adopted by the highest legislative body of the union, and passed under all the forms required to give it the sanction of law.
The subject matter of this act is the return and restoration of fugitive slaves, designated in the constitution as persons held to service or labor in one state under the laws thereof. [295] escaping into another. The whole provision, art. 4, § 2, is as follows: “ No person held to service or labor in one state under the laws thereof, escaping into another, shall, in consequence of any law or regulation therein, be discharged from such service or labor, but shall be delivered up on claim of the party to whom such service or labor may be due.”
In order to a just understanding and exposition of this provision of the constitution, and the laws made under it, it is necessary to refer briefly to the circumstances under which the constitution was made, and the great social and political objects and purposes, which the people of the United States had in view, in adopting it. The constitution of the United States is not to be expounded as if it were now opened for the first time, and with a sole regard to the words and figures in which it is expressed; its history is too deeply interwoven with our whole social system, to be disregarded, when we are called upon to ascertain its full meaning and effect.
These North American provinces, when they became independent of the government of Great Britain, regarded themselves, and were regarded, as sovereign states; the articles of confederation were considered rather as a compact amongst independent states, than as a government. While pressed by the force of a common external hostility, by which England attempted to subdue them to obedience, a sense of common danger and common interest, and the necessity of acting together in their common defence, compelled them to act together with a good degree of harmony and union ; but this could last only while this external pressure continued. When it terminated, what was the condition of these independent communities ? That of sovereign states, varying greatly in regard to extent of territory, numbers and strength, with the usual powers incident to sovereign states, of declaring war and peace, making treaties, and exercising an exclusive control and jurisdiction over all persons and subjects within their respective territories. These would have been their rights and powers, had no union been formed.
In some of the states, large numbers of slaves were held; in others a few only; but some, it is believed, in all, except [296] Massachusetts, in which slavery was considered as abolished, by the Declaration of Rights, adopted as part of the constitution of 1780. Had no union been formed, the states would have been left to assert and defend their rights against each other by war only. If two states bordered on each other, one a slave state and the other a free state, there would of course be a constant effort of slaves to escape into the free state, and a constant temptation to slave owners to follow and recapture them, which must be done by force, unless sanctioned by treaty. Such acts on both sides must be regarded by each as violations of the exclusive territorial rights of the other, and a justifiable cause of war. There would naturally be a constant border war, leading either to interminable hostility, or to the subjugation of one by the other. This state of things could only be avoided by a treaty, by which one party should stipulate not to permit its own territory to be used as an asylum for fugitive slaves escaping from the other, and the other party should engage to restrain its own subjects from making hostile incursions into the territory of the other. It would be in vain for the government of the free state to insist that they would enter into no such compact, because slavery is wrong and unjust; each sovereign power has a right, by the recognized law of nations, to decide for itself, upon its own internal condition and regulations, within its own territory. This principle has been acknowledged by all nations, even those to whose policy, laws and institutions, slavery is most obnoxious. If the refusal to enter into such treaty could have abolished slavery in a slave state, it might have been a motive with a free state to refuse. But it is manifest that it would not, except by war and conquest, depending not upon a principle of right, justice or policy, but upon the preponderance of physical force.
The evils existing immediately before the adoption of the ■constitution, and the greater and more appalling evils in prospect, indicated the absolute necessity of forming a more perfect union, in order to secure the peace and prosperity of all the states. This could only be done by the several states renouncing and relinquishing a portion of their powers of sov [297] re.ignty ; and these were the right of war and peace, the right of making treaties with foreign powers and with each other, and the right of exercising absolute power and dominion over all persons and things within their own territories respectively. In order to form this more perfect union, delegates from the several states met together. It was obvious that the renunciation of some of the powers of sovereignty, at least to the extent above mentioned, was the first step to be taken, and was absolutely essential to the success of any scheme of union. Still, it could not but be perceived that the great difference in the condition of the states in regard to the institution of slavery, and the prospect that many of the states would soon become free, from causes then in operation, constituted a difference in their relative condition, which must first be provided for.. So long as the states remained sovereign, they could assert their rights in regard to fugitive slaves by war or treaty, and, therefore, before renouncing and surrendering such sovereignty, some substitute, in the nature of a treaty or compact, must necessarily be devised and agreed to. The clause above cited from the constitution seems to have been, in character, precisely such a treaty. It was a solemn compact, entered into by the delegates of states then sovereign and independent, and free to remain so, on great deliberation, and on the highest considerations of justice and policy, and reciprocal benefit, and in order to secure the peace and prosperity of all the states. It carries with it, therefore, all the sanction which can belong to it, either as an international or a social compact, made by parties invested with full powers to deliberate and act; or as a fundamental law, agreed on as the basis of a government, irrepealable, and to be changed only by the power that made it, in the form prescribed by it.
Such being the circumstances, under which this provision of the constitution was adopted ; such the relations of the several states to each other; such the manifest object which the framers of the constitution had in view; we are to look at the clause in question, to ascertain its true meaning and effect. We think it was intended' to guaranty to the owner of a slave, living within the territory of a state in which slavery is [298] permitted, the rights conferred upon such owner, by the laws of such state; and that no state should make its own territory an asylum and sanctuary for fugitive slaves, by any law or regulation, by which a slave, who had escaped from a state where he owed labor or service into such state or territory, should avoid being reclaimed; it was designed also to provide a practicable and peaceable mode, by which such fugitive, upon the claim of the person to whom such labor or service should be due, might be delivered up.
But the right, thus secured by the constitution to the slave owner, is limited by it, and cannot be extended, by implication or construction, a line beyond the precise casus foederis. The fugitive must not only owe service or labor in another state, but he must have escaped from it. This is the extent of the right of the master. It is founded in the compact, and limited by the compact. It has therefore been held, that if a slave is brought into this state by his master, or comes here in the course of his occupation or employment without having escaped, he is not within the case provided for by the constitution. Commonwealth v. Aves, 18 Pick. 193. This results not so much from the voluntary act of the master in bringing or permitting the slave to be brought within the limits of a free state, as because the law by which the person is held to slavery in his own state is local, and has no extraterritorial operation, and because he is not within the provision of the constitution, under which he may be lawfully removed, not having escaped.
Upon the same principle it was held, on the return of a writ of habeas corpus before me in vacation, that a person who was a slave in Virginia, belonging to an officer of the navy, and who had been taken out by such officer by the special permission of the secretary of the navy, and where the ship had been ordered to Boston on her return from a cruise, and the crew to be discharged there, could not be taken back to Virginia by force, and against his will; because the master had no power to imprison him within the limits of this state, or remove him by force from them, under his general authority as an owner by the law of Virginia; and that he was not liable [299] to be claimed as a fugitive,' under the provision of the constitution, because he had not escaped. Commonwealth v. Fitzgerald, 7 Law Reporter, 379.
To the extent, however, to which this privilege or benefit goes, that of securing the return of persons, owing service or labor in one state, who have fled and escaped into another, this provision of the constitution must be regarded as complete and sufficient to the proposed right. But the constitution itself did not profess or propose to direct, in detail, how the rights, privileges, benefits and immunities, intended to be declared and secured by it, should be practically carried into effect; this was left to be done by laws to be passed by the legislature, and applied by the judiciary, for the establishment of which full provision was at the same time made. The constitution contemplated a division and distribution of the powers incident to a sovereign state, between the general government of the United States, and the government of each particular state; a distribution, not depending on local limits, but made by selecting certain subjects of common interest, and placing them under the entire and exclusive jurisdiction of the general government; such, for instance, as the foreign relations of the country, the subjects of war and peace, treaties, the regulation of commerce with foreign nations, and among the several states, and with the Indian tribes. These are a few of the most prominent subjects, by way of illustration. And the theory of the general government is, that these subjects, in their full extent and entire details, being placed under the jurisdiction of the general government, are necessarily withdrawn from the jurisdiction of the state, and the jurisdiction of the general government therefore becomes exclusive. And this is necessary to prevent constant collision and interference ; and it is obvious that it must be so, because two distinct governments cannot exercise the same power, at the same time, on the same subject matter. This is not left to mere implication. It is expressly declared, in art. 1, § 8, that congress shall have power to make all laws which shall be necessary and proper, for carrying into execution all the powers vested bj the constitution in the government of the United States, oi [300] in any department or officer thereof. And by art. 6, “ this constitution, and the laws of the United States which shall be made in pursuance thereof, and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land ; and the judges in every state shall be bound thereby, any thing in the constitution or laws of any state to the contrary notwithstanding.” All such laws made by the general government, upon the rights, duties and subjects, specially enumerated and confided to their jurisdiction, are necessarily exclusive and supreme, as well by express provision, as by necessary implication. And. the general government is provided with its executive, legislative and judicial departments, not only to make laws regulating the rights, duties and subjects thus confided to them, but to administer right and justice respecting them in a regular course of judicature, and cause them to be carried into full execution, by its own powers, without dependence upon state authority, and without any let or restraint imposed by it.
It was, as we believe, under this view of the right of regaining specifically the custody of one from whom service or labor is due by the laws of one state, and who has escaped into another, and under this view of the powers of the general government, and the duty of congress, that the law of February 12, 1793, was passed. Act of 1793, c. 7, (1 U. S. Stat. at Large, 302.) It was passed at the second congress, so soon after the adoption of the constitution, that many of the members may be well presumed to have been members of the convention, and all of them to have been intimately conversant with the great principles of the constitution, and with the views, intentions, and purposes of its framers. This species of contemporaneous construction has ever been regarded as of great weight and importance, and is entitled to the highest respect. It bears with a great weight of authority upon two points; first, as to the power and duty of congress to pass laws to secure and carry into effect a right confirmed by the constitution of the United States; and secondly, as to the fitness of the provisions of law thereby adopted, and their adaptation to the proper and practical assertion of the right secured by the constitution.
[301] The act of 1793, made for the purpose of providing and declaring the manner' in which the claim shall be made for the fugitive from service, who has escaped, is substantially as follows: That when any person held to labor in any of the "United States, or in either of the territories, under the laws thereof, shall escape into any other of the said states or territories, the person to whom such labor may be due, his agent or attorney, is empowered to seize or arrest such fugitive, and to take him or her before any judge of the circuit or district courts of the United States, residing or being within the state, or before any magistrate of a county, city or town corporate, wherein such seizure or arrest shall be made; and upon proof, to the satisfaction of such judge or magistrate, that the person so seized doth, under the laws of the state or territory from which he fled, owe service to the person thus claiming him, it shall be the duty of such judge or magistrate to give a certificate to the claimant, which shall be a sufficient warrant for removing the fugitive to the state or territory from which he fled.
The manifest intent of this act of congress was, to regulate and give effect to the right given by the constitution. It secured to the claimant the aid and assistance of certain magistrates and officers, to enable him to exercise his right in a more regular and orderly manner, and without being chargeable with a breach of the peace. It obviously contemplated a prompt and summary proceeding, adapted to the exigency of the occasion, in aid of a power, in terms conferred by the constitution on the claimant. It vested the power of inquiry, (whether regarded as judicial or otherwise,) the same power which is now drawn in question, in magistrates of counties, cities or towns corporate. As to the mode of trial contemplated by this act, it is described by Mr. Justice McLean, in his opinion in Prigg v. Pennsylvania, 16 Peters, 539, 667, in these terms: “ Both the constitution and the act of .1793 require the fugitive from labor to be delivered up on claim being made by the party, or his agent, to whom the service is due. Not that a suit should be regularly instituted. The proceeding, authorized by the law is summary and informal. [302] The fugitive is seized and taken before a judge or magistrate within the state, and on proof, parol or written, that he owes Labor to the claimant, it is made the duty of the judge or magistrate to give the certificate, which authorizes the removal of the fugitive to the state from whence he absconded,” A historical fact is mentioned by the same learned judge, (p. 660,) which may throw some light not only on the introduction of the constitutional provision, but on the form of the law intended to carry it into effect. “At an early period,” says he, “ of our history, slavery existed in all the colonies ; and fugitives from labor were claimed and delivered up under a spirit of comity or conventional law among the colonies.” If such was the practice when the colonies were independent of each other in their municipal laws or regulations, and even after a partial union by the articles of confederation, which made no provision on the subject, may it not be reasonably conjectured, that this claim to custody of the person of the alleged slave, when there was no positive law to regulate it, was enforced through the medium of colonial magistrates, exercising analogous powers in similar cases, and may not this have suggested the method provided for in the act of 1793 ?
By the act of 1793, the authority of issuing a warrant to arrest a fugitive from labor, of inquiring into the fact both of owing labor and .of having escaped, and of granting a certificate, is conferred on justices of the peace, appointed for a term of years, and without salary, by the state government, or on the magistrates of cities and towns corporate. It is very manifest, therefore, that these powers were not deemed judicial by the congress of 1793, in the sense in which it is now insisted that the commissioner, beforé whom the petitioner has been brought, is in the exercise of judicial powers not warranted by the constitution, because not commissioned as a judge, nor holding his office during good behavior. Indeed, it is difficult, by general terms, to draw a precise line of distinction between judicial powers and those not judicial. It is easy to designate the broad line, but not easy to mark the minute shades of difference between them. Those officers wno hold courts, and have civil and criminal jurisdiction, [303] beyond doubt, exercise judicial powers. But there are, under every government, functions to be exercised, partly judicial and partly administrative, which yet require skill and experience, judgment, and even legal and judicial discrimination, which it is more difficult, to classify. So under our own government, in the constitution of which a similar provision is found, requiring all judicial officers, excepting justices of the peace, to be commissioned and hold their offices during good behavior, we find many such cases. Such are bank commissioners, county commissioners, sheriffs, when presiding over and instructing juries impanelled to assess road damages and damages for flowing land; commissioners of insolvency on the estates of deceased persons and of living insolvent debtors, masters in chancery, and many others.
Now so far as we understand it, commissioners of the circuit court of the United States are officers exercising functions very similar to those of justices of the peace under the laws of the commonwealth. They are commonly appointed from among counsellors at law, of some standing and well reputed for professional skill and experience. Their duty is to inquire into violations of the laws of the United States, to hear complaints, issue warrants, hold examinations, and bind over or commit persons for trial for offences. These are functions requiring considerable skill and experience in the administration of justice, and it is just to presume that they are duly qualified to perform their duties. Would it not be competent for congress, under the powers vested in the general government, to provide by law for the appointment of justices of the peace, in each district, to be vested with powers under the laws of the United States, analogous to those exercised under state laws by justices of the peace under the state governments, without commissioning them as judges during good behavior, or giving them fixed salaries ?
At the same time it may be proper to say, that if this argument, drawn from the constitution of the United States, were now first applied to the law of 1793, deriving no sanction from contemporaneous construction, judicial precedent, and the acquiescence of the general and state governments, [304] the argument from the limitation of judicial power would be entitled to very grave consideration.
But we are not entitled to consider this a new question ;• we must consider it settled and determined by authorities, which it would be a dereliction of official duty, and a disregard of judicial responsibility, to overlook.
We have already referred to the great weight to be given, in the exposition of statutes, to what may be regarded as contemporaneous construction; and this construction is of the more importance, when the question turns upon the constitutionality of a legal enactment, made soon after the adoption of the constitution, and for the avowed purpose, not only of conforming strictly to the powers given by the constitution, but of carrying out the very objects and purposes contemplated by it. To this is now to be added an acquiescence both of the state and general governments, of their representatives and people, for nearly sixty years, and a series of judicial decisions, by the highest courts of our own and of the other states, and also of the supreme court of the United States, whose authority upon controverted questions, within their jurisdiction, and declared by their judgments, is binding upon the judges of state courts.
The constitutionality of the act of 1793, came directly before this court, and was argued and decided in 1823. Commonwealth v. Griffith, 2 Pick. 11. The opinion of the court was delivered by that most ■ humane man and enlightened magistrate, the late Chief Justice Parker. After disposing of a technical question, he says : “ This brings the case to a single point, whether the statute of the United States, giving power to seize a slave without a warrant, is constitutional.” After alluding to the relative condition of the states, and the circumstances under which the constitution was made, he says: “ They [the states by whose laws slavery was permitted] might have kept aloof from the constitution. That instru ment was a compromise. It was a compact by which all are bound. We are to consider, then, what was the intention of the constitution.” Again; “ the constitution does not prescribe the mode of reclaiming a slave, but leaves it to be determined [305] by congress.” “ Whether the statute is a harsh one, is not for us to determine.” “ We do not perceive that the statute is unconstitutional, and we think the defence is well made out.” The chief justice added, that this construction of the statute had been adopted ever since the federal constitution went into operation, by Lowell and Davis, justices of the district court of the United States. To weaken the force of this precedent, it has sometimes been said, when the case has been cited in argument, that this opinion was not unanimous. It is true, that Thatcher, J., dissented from the majority, as to the construction of the law; but he did not doubt its constitutionality. He admitted that congress might prescribe a new mode of apprehending a fugitive from service, which should supersede our law. In answer to the objection to the constitutionality of this statute, it was pressed upon the consideration of the court, in that case, that it had been in operation then thirty years, and its constitutionality had never been before questioned. If that consideration had weight with the court then, the acquiescence of thirty years more has greatly increased it.
I shall next cite the case of Wright v. Deacon, 5 S. & R. 62, in the supreme court of Pennsylvania, and I do it the more readily, because the opinion was delivered by Tilghman, C. J., whose authority was cited in the argument of this case. It arose on a writ de homine replegiando, sued out by a person claimed as a slave, against the prison keeper in whose custody he was detained, under a certificate granted conformably to the act of congress of 1793. He says that it is well known that the constitution could not have been adopted, unless the property in slaves had been secured; and that this constitution had been adopted by the free consent of the citizens of Pennsylvania. He then cites the article in the constitution. But, he says, it required a law to regulate the manner in which this principle should be reduced to practice, and cites the act of congress made for that purpose, and continues: “ It plainly appears from the whole scope and tenor of the constitution and act of congress, that the fugitive was to be delivered up, on a summary proceeding, without the delay [306] of a formal trial in a court of common law.” “ But if this writ of homine replegiando is to issue from a state court, what is its effect, but to arrest the warrant,” [issued under the act of congress,] “and thus defeat.the constitution and law of the United States ? The constitution and the law say, that the master may remove his slave by virtue of the judge’s certificate ; but the state court says that he shall not remove him. It appears to us, that this is the plain state of the matter, and that the writ has been issued in violation of the constitution of the United States. We are therefore of opinion that it should be quashed.”
The same principles have been decided by the supreme court of the state of New York. Jack v. Martin, 12 Wend. 311. This case was also commenced by a writ de homine replegiando, corresponding with our writ of personal replevin, sued out by the fugitive and alleged slave against his mistress. The case is full and decisive. The opinion, as delivered by Mr. Justice Nelson, is very instructive, but too long to be quoted here. It affirms the right of the master, as established by the constitution, the power and duty of the general government to pass laws to secure the right by suitable and practicable means, the exclusive power of congress to pass such laws, and the invalidity of all state laws on the subject.
But the judicial authority most to be relied on, and which, when distinctly ascertained, is binding and conclusive upon all subjects within their special jurisdiction, is that of the su- . preme court of the United States. Before the case hereafter cited, the question had come before Mr. Justice Washington, then of the supreme court of the United States, on the circuit, in Hill v. Low, 4 Wash. C. C. 327, in which he expressed his opinion in favor of the constitutionality of the act of congress to which I refer.
A case came before the supreme court of the United States, in 1842, on a special verdict, in which the point in question was fully discussed and deliberately settled. Prigg v. Pennsylvania, 16 Pet. 539. There was some difference of opinion among the judges upon minor points, but none, it is believed, upon the subject now under consideration, the constitution[307] ality and binding force of the act of congress of 1793, and especially of that part of it which confers an authority on circuit and district judges, and on county and city magistrates, to take a summary jurisdiction, in the manner provided by the act of 1793. Some of the majority were of opinion, that congress could not, by its own enactments, require state officers, such as magistrates of counties, cities, and towns corporate, to take upon themselves the duty of exercising such jurisdiction ; but they conceded, that the law conferred a sufficient authority on them to act, if they should think fit to do so, voluntarily, and if they were not restrained by state legislation. On the other hand, Mr. Justice McLean, agreeing to the general rule, as to state officers, was of opinion, that, under the peculiar circumstances, congress had the power to enforce this duty upon magistrates, and that they were not at liberty to decline it, but were legally bound to execute it. All' the judges were agreed, that the state could make no law, and adopt no regulation, which would impair the right of an owner to pursue and retake a fugitive from labor; but they differed in one particular. The majority were of opinion, that the whole subject being placed under the jurisdiction of the general government, the state governments could make no law on the subject, even in aid of the claim of the slave owner; basing their judgment on the ground, that as the whole subject was placed exclusively under the cognizance of the general government, it was for congress to make all the rules and regulations upon the subject; that it was to be presumed they had, in the law in question, made sufficient rules and regulations to give effect practically to the right intended to be secured; and if that had not been done, it was solely for congress to supply the deficiency. They also relied on the ground, that if state laws went further into detail, and made provision for á course of proceeding beyond that indicated by the act of congress,-it might tend to interfere therewith, and that if they prescribed precisely the same modes, they would be merely superfluous and embarrassing. On the contrary, some of the judges were of opinion, that the state legislatures might make laws on the subject, provided only that thev should in no way impede or [308] hinder the proceedings under the law of congress. These, it is believed, are the principal differences in the opinions of the different judges. They all concur in the construction of the constitution, as intended to secure the right of a slave owner to regain the custody of a slave, who has escaped from service ; in the right of the master to reclaim him in other states; in the constitutionality of the law of congress ; and the nullity and invalidity of any and every state law which would impair the right, or impede or interfere with the provisions of the act of congress, providing for a summary proceeding before a judge or magistrate. Mr. Justice Baldwin concurred in the judgment of the court, but dissented from the principles laid down by the court as the grounds of their opinion, yet stated none of his own. He had, however, previously expressed an opinion on the circuit, that the act was constitutional, in the case of Johnson v. Tompkins, Bald. 571. The case in 16 Pet, appears to us to be authoritative and decisive, and it was so considered by the supreme court of the United States in the case of Jones v. Van Zandt, 5 How. 215, 229.