Mr. Justice Black
delivered the opinion of the Court.
The petitioner Thomas C. McConnell, a lawyer, was summarily found guilty of contempt of court for statements made while representing the Parmelee Transportation Company in an antitrust suit for treble damages [231]*231and an injunction. The complaint charged that a number of defendants had unlawfully conspired to destroy Parmelee’s business by restraining and monopolizing trade in violation of the Sherman Act.1 Petitioner and his co-counsel, Lee A. Freeman, had done extensive pretrial preparation on the issue of conspiracy which was the heart of their case. At the very outset of the trial, however, the district judge on his own motion refused to permit counsel to try to prove their conspiracy charge, holding that they must first prove in a wholly separate trial that defendants’ actions had resulted in an economic injury to the public — an erroneous holding since we have held that the right of recovery of a plaintiff in a treble damage antitrust case does not depend at all on proving an economic injury to the public.2
Cut off by the judge’s erroneous ruling from trial of the basic issue of conspiracy and wishing to provide a record which would allow this ruling to be reviewed by the Court of Appeals, counsel for Parmelee asked counsel for defendants to stipulate that plaintiff would have introduced certain evidence of conspiracy had it been allowed to do so. Defense counsel refused to stipulate, however, insisting that Parmelee’s counsel prepare their record by following the procedure set out in Rule 43 (c) of the Federal Rules of Civil Procedure, which requires that before an offer of proof is made questions upon which the offer is based must first be asked in the presence of the jury.3 [232]*232Unwilling to risk dismissal of their appeal for failure to follow Rule 43 (c), Parmelee’s counsel proceeded to produce and question witnesses in the presence of the jury-in order to lay the proper foundation for their offers of proof of conspiracy. But during the process of this questioning the judge ordered it stopped and directed that any further offers of proof be made without first having asked questions of witnesses in the presence of the jury. This ruling placed Parmelee’s counsel in quite a dilemma because defense counsel was still insisting that all offers of proof be made in strict compliance with Rule 43 (c) and there was no way of knowing with certainty whether the Court of Appeals would treat the trial court’s order to dispense with questions before the jury as an excuse for failure to comply with the Rule. Petitioner therefore not only sought to make clear to the court that he thought defense counsel’s objection was “right” 4 but also repeatedly insisted that he be allowed to make his offers of proof in compliance with the Rule.5 Following the trial the judge charged petitioner and his co-counsel Freeman in a number of specifications with being guilty of contemp[233]*233tuous conduct during the course of the trial. After separate hearings both lawyers were summarily found guilty by the trial judge on all specifications. Both appealed to the Court of Appeals, which reversed all of Freeman’s convictions,6 reversed two of petitioner McConnell’s convictions, but, with Judge Duffy dissenting, sustained the conviction of petitioner on Specification 6 — the specification based on petitioner’s insistence that he be allowed to make offers of proof in compliance with Rule 43 (c).7 Even as to this conviction, however, the Court of Appeals held that the jail sentence imposed by the trial judge should be reduced to a fine of $100. As in Offutt v. United States,8 the “importance of assuring alert self-restraint in the exercise by district judges of the summary power for punishing contempt” prompted us to bring the case here.9
The statute under which petitioner was summarily convicted of contempt is 18 U. S. C. § 401, which provides that:
“A court of the United States shall have power to punish by fine or imprisonment, at its discretion, such contempt of its authority, and none other, as—
“(1) Misbehavior of any person in its presence or so near thereto as to obstruct the administration of justice . . .
This section is based on an Act passed in 183110 in order to correct serious abuses of the summary contempt power that had grown up and was intended as a “drastic delimitation ... of the broad undefined power of the inferior federal courts under the Act of 1789,” 11 revealing “a Con[234]*234gressional intent to safeguard Constitutional procedures by limiting courts, as Congress is limited in contempt cases, to 'the least possible power adequate to the end proposed.’ ” 12 “The exercise by federal courts of any broader contempt power than this,” we have said, “would permit too great inroads on the procedural safeguards of the Bill of Rights, since contempts are summary in their nature, and leave determination of guilt to a judge rather than a jury.” 13 And we held long ago, in Ex parte Hudgings,14 that while this statute undoubtedly shows a purpose to give courts summary powers to protect the administration of justice against immediate interruption of court business, it also means that before the drastic procedures of the summary contempt power may be invoked to replace the protections of ordinary constitutional procedures there must be an actual obstruction of justice:
“An obstruction to the performance of judicial duty resulting from an act done in the presence of the court is, then, the characteristic upon which the power to punish for contempt must rest. This being true, it follows that the presence of that element must clearly be shown in every case where the power to punish for contempt is exerted . . . .”
Thus the question in this case comes down to whether it can “clearly be shown” on this record that the petitioner’s statements while attempting to make his offers of proof actually obstructed the district judge in “the performance of judicial duty.”
The Court of Appeals answered this question by sustaining Specification 6 only on the basis of petitioner’s [235]*235last sentence in the colloquy set out in the specification. That specification reads:
“On April 27, 1960, in the presence and hearing of the jury, after the Court had instructed the attorneys for plaintiff to refrain from repeatedly asking questions on subjects which the Court had ruled [were] not admissible, in the presence of the jury as distinguished from an offer of proof outside the presence of the jury, the following occurred:
“ 'By Mr. McConnell: Now you are trying to tell us we can’t ask these questions. We have a right to ask these questions, and until we are stopped from asking these questions we are going to ask them, because it is in our prerogative in doing it.
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Mr. Justice Black
delivered the opinion of the Court.
The petitioner Thomas C. McConnell, a lawyer, was summarily found guilty of contempt of court for statements made while representing the Parmelee Transportation Company in an antitrust suit for treble damages [231]*231and an injunction. The complaint charged that a number of defendants had unlawfully conspired to destroy Parmelee’s business by restraining and monopolizing trade in violation of the Sherman Act.1 Petitioner and his co-counsel, Lee A. Freeman, had done extensive pretrial preparation on the issue of conspiracy which was the heart of their case. At the very outset of the trial, however, the district judge on his own motion refused to permit counsel to try to prove their conspiracy charge, holding that they must first prove in a wholly separate trial that defendants’ actions had resulted in an economic injury to the public — an erroneous holding since we have held that the right of recovery of a plaintiff in a treble damage antitrust case does not depend at all on proving an economic injury to the public.2
Cut off by the judge’s erroneous ruling from trial of the basic issue of conspiracy and wishing to provide a record which would allow this ruling to be reviewed by the Court of Appeals, counsel for Parmelee asked counsel for defendants to stipulate that plaintiff would have introduced certain evidence of conspiracy had it been allowed to do so. Defense counsel refused to stipulate, however, insisting that Parmelee’s counsel prepare their record by following the procedure set out in Rule 43 (c) of the Federal Rules of Civil Procedure, which requires that before an offer of proof is made questions upon which the offer is based must first be asked in the presence of the jury.3 [232]*232Unwilling to risk dismissal of their appeal for failure to follow Rule 43 (c), Parmelee’s counsel proceeded to produce and question witnesses in the presence of the jury-in order to lay the proper foundation for their offers of proof of conspiracy. But during the process of this questioning the judge ordered it stopped and directed that any further offers of proof be made without first having asked questions of witnesses in the presence of the jury. This ruling placed Parmelee’s counsel in quite a dilemma because defense counsel was still insisting that all offers of proof be made in strict compliance with Rule 43 (c) and there was no way of knowing with certainty whether the Court of Appeals would treat the trial court’s order to dispense with questions before the jury as an excuse for failure to comply with the Rule. Petitioner therefore not only sought to make clear to the court that he thought defense counsel’s objection was “right” 4 but also repeatedly insisted that he be allowed to make his offers of proof in compliance with the Rule.5 Following the trial the judge charged petitioner and his co-counsel Freeman in a number of specifications with being guilty of contemp[233]*233tuous conduct during the course of the trial. After separate hearings both lawyers were summarily found guilty by the trial judge on all specifications. Both appealed to the Court of Appeals, which reversed all of Freeman’s convictions,6 reversed two of petitioner McConnell’s convictions, but, with Judge Duffy dissenting, sustained the conviction of petitioner on Specification 6 — the specification based on petitioner’s insistence that he be allowed to make offers of proof in compliance with Rule 43 (c).7 Even as to this conviction, however, the Court of Appeals held that the jail sentence imposed by the trial judge should be reduced to a fine of $100. As in Offutt v. United States,8 the “importance of assuring alert self-restraint in the exercise by district judges of the summary power for punishing contempt” prompted us to bring the case here.9
The statute under which petitioner was summarily convicted of contempt is 18 U. S. C. § 401, which provides that:
“A court of the United States shall have power to punish by fine or imprisonment, at its discretion, such contempt of its authority, and none other, as—
“(1) Misbehavior of any person in its presence or so near thereto as to obstruct the administration of justice . . .
This section is based on an Act passed in 183110 in order to correct serious abuses of the summary contempt power that had grown up and was intended as a “drastic delimitation ... of the broad undefined power of the inferior federal courts under the Act of 1789,” 11 revealing “a Con[234]*234gressional intent to safeguard Constitutional procedures by limiting courts, as Congress is limited in contempt cases, to 'the least possible power adequate to the end proposed.’ ” 12 “The exercise by federal courts of any broader contempt power than this,” we have said, “would permit too great inroads on the procedural safeguards of the Bill of Rights, since contempts are summary in their nature, and leave determination of guilt to a judge rather than a jury.” 13 And we held long ago, in Ex parte Hudgings,14 that while this statute undoubtedly shows a purpose to give courts summary powers to protect the administration of justice against immediate interruption of court business, it also means that before the drastic procedures of the summary contempt power may be invoked to replace the protections of ordinary constitutional procedures there must be an actual obstruction of justice:
“An obstruction to the performance of judicial duty resulting from an act done in the presence of the court is, then, the characteristic upon which the power to punish for contempt must rest. This being true, it follows that the presence of that element must clearly be shown in every case where the power to punish for contempt is exerted . . . .”
Thus the question in this case comes down to whether it can “clearly be shown” on this record that the petitioner’s statements while attempting to make his offers of proof actually obstructed the district judge in “the performance of judicial duty.”
The Court of Appeals answered this question by sustaining Specification 6 only on the basis of petitioner’s [235]*235last sentence in the colloquy set out in the specification. That specification reads:
“On April 27, 1960, in the presence and hearing of the jury, after the Court had instructed the attorneys for plaintiff to refrain from repeatedly asking questions on subjects which the Court had ruled [were] not admissible, in the presence of the jury as distinguished from an offer of proof outside the presence of the jury, the following occurred:
“ 'By Mr. McConnell: Now you are trying to tell us we can’t ask these questions. We have a right to ask these questions, and until we are stopped from asking these questions we are going to ask them, because it is in our prerogative in doing it.
“ 'By the Court: I am now stopping you from asking the questions about conversations with Mr. Cross, because I have ruled specifically, definitely and completely that it is not an issue in this case.
“'By Mr. McConnell: We have a right to ask them.
“ ‘By the Court: You can offer proof on it.
“‘By Mr. McConnell: We have a right to ask questions which we offer on this issue, and Your Honor can sustain their objection to them. We don’t have a right to read the answers, but toe have a right to ask the questions, and we propose to do so unless some bailiff stops us.’ ” (Emphasis added.)
The record shows that after this colloquy petitioner’s co-counsel asked for a short recess, that following this recess petitioner did not continue to ask questions which the judge had forbidden and that in fact he did not ask any more such questions again throughout the remainder of the trial. We agree with Judge Duffy who dissented below that there was nothing in petitioner’s conduct suffi[236]*236ciently disruptive of the trial court’s business to be an obstruction of justice. It is true that petitioner stated that counsel had a right to ask questions that the judge did not want asked and that “we propose to do so unless some bailiff stops us.” The fact remains, however, that the bailiff never had to interrupt the trial by arresting petitioner, for the simple reason that after this statement petitioner never did ask any more questions along the line which the judge had forbidden. And we cannot agree that a mere statement by a lawyer of his intention to press his legal contention until the court has a bailiff stop him can amount to an obstruction of justice that can be punished under the limited powers of summary contempt which Congress has granted to the federal courts. The arguments of a lawyer in presenting his client’s case strenuously and persistently cannot amount to a contempt of court so long as the lawyer does not in some way create an obstruction which blocks the judge in the performance of his judicial duty. The petitioner created no such obstacle here.
While we appreciate the necessity for a judge to have the power to protect himself from actual obstruction in the courtroom, or even from conduct so near to the court as actually to obstruct justice, it is also essential to a fair administration of justice that lawyers be able to make honest good-faith efforts to present their clients’ cases. An independent judiciary and a vigorous, independent bar are both indispensable parts of our system of justice. To preserve the kind of trials that our system envisages, Congress has limited the summary contempt power vested in courts to the least possible power adequate to prevent actual obstruction of justice, and we think that that power did not extend to this case.
Reversed
Mr. Justice Frankfurter and Mr. Justice White took no part in the consideration or decision of this case.