HEANEY, Circuit Judge.
The State of Iowa (State) and several individual farmers (plaintiffs-intervenors in the district court) appeal from the district court’s dismissal of their motion for a preliminary injunction to compel John Block, Secretary of the United States Department of Agriculture (Secretary), to implement three federal agricultural disaster relief programs. For reversal, the State and the farmers argue that the district court erred, first, in declining to accept subject matter jurisdiction on the ground that the Secretary’s decisions under the discretionary programs are not reviewable in the courts; second, in approving the Secretary’s actions according to “pragmatic factors”; and, third, in finding that the State lacked standing to sue as parens patriae on behalf of its citizens. Although we affirm the district court’s finding regarding the State’s lack of standing, we believe the district court erred in declining to accept subject matter jurisdiction of one of the programs. Accordingly, we reverse and remand for additional proceedings in accordance with this opinion.
I. BACKGROUND.
In 1983, a devastating drought parched the agricultural midwest, including southern Iowa. Farm output fell to a fraction of its ordinary level and many farmers skirted the brink, of financial ruin. To mitigate this disaster, Iowa’s governor requested that the Secretary implement several discretionary federal disaster relief programs, which the Secretary declined to do. For purposes of this appeal, these programs included the Special Disaster Payment Program (SDPP), 7 U.S.C. § 1444d(b)(2) (1982); the Livestock Feed Program (LFP), 7 U.S.C. § 1427 (1982) (as implemented in 7 C.F.R. §§ 1475.1-17 (1982)); and the Emergency Feed Program (EFP), 7 U.S.C. § 2267 (1984) (as implemented in 7 C.F.R. §§ 1475.50-68 (1984)).1
[349]*349When the Secretary refused assistance under these programs, the State of Iowa filed an action in federal court seeking an injunction to compel him to implement the programs. After the action had commenced, six Iowa farm couples (who suffered under the drought and would be eligible for benefits under these programs) intervened as plaintiffs in the action. The district court heard argument on the motion for preliminary injunction and on the motion to dismiss and dismissed the action, finding that the State had no standing to litigate either on its own behalf or as par-ens patriae. The district court also found that it had no subject matter jurisdiction because the statute’s broad grant of authority left the courts little or no law on which to review the Secretary’s inaction. Finally, the district court also cited pragmatic considerations — deference to agency expertise — which required dismissal. The State and the intervenors appeal.
II. SUBJECT MATTER JURISDICTION.
In determining that it lacked subject matter jurisdiction to consider the case at bar, the district court relied on a narrow exception to the grant of judicial review established in the Administrative Procedure Act (APA), 5 U.S.C. § 701(a)(2). In pertinent part, that section provides for judicial review of agency action “except to the extent that — * * * (2) agency action is committed to agency discretion by law.” The Supreme Court has interpreted this section as applicable “in those rare instances where statutes are drawn in such broad terms that in a given case there is no law to apply.” Citizens to Preserve Overton Park v. Volpe, 401 U.S. 402, 410, 91 S.Ct. 814, 821, 28 L.Ed.2d 136 (1971), citing S.Rep. No. 752, 79th Cong., 1st Sess., 26 (1945). After reviewing the applicable legal standards and the relevant legislative and administrative materials, we conclude that the district court erred in declining to accept subject matter jurisdiction based on this provision.
Initially, we examine relevant case law to determine the sources from which we might derive “law to apply.” In Overton Park, the Supreme Court held that the “agency discretion” exception to judicial review is “very narrow” and applies only in “rare instances.” Id. In that ease, the Supreme Court followed a careful pattern as it reviewed the language of the statute in question and its legislative history. Elsewhere the Supreme Court has specified what materials constitute the proper subject of inquiry in this type of case: “Whether and to what extent a particular statute precludes judicial review is determined not only from its express language, but also from the structure of the statutory scheme, its objectives, its legislative history, and the nature of the administrative action involved.” Block v. Community Nutrition Institute, 467 U.S. 340, ---, 104 S.Ct. 2450, 2454, 81 L.Ed.2d 270, 275-76 (1984). Accordingly, we now turn to these legislative materials.
A. The SDPP Statute and Supporting Legislative Materials.
The Special Disaster Payments Program (SDPP), which is without implementing regulations, presents sufficient legislative materials to assist reviewing courts. Under 7 U.S.C. § 1444d(b)(2), the Secretary “shall” make disaster payments to farmers on farms which are not covered by the Federal Crop Insurance Act (FCIA) (7 U.S.C. § 1501 et seq.) if the Secretary determines either that a natural disaster has prevented planting of feed grains or that a natural disaster has reduced the harvest of feed grains. 7 U.S.C. § 1444d(b)(2)(A) & (B). On farms that are covered by the FCIA, the Secretary “may make disaster payments” whenever he determines: 1) that, as a result of natural disaster, farmers have sustained “substantial losses of production”; 2) that other federal assistance programs are insufficient to alleviate the economic emergency; and 3) that “additional assistance must be made available” [350]*350to eliminate the economic emergency. 7 U.S.C. § 1444d(b)(2)(D)(iii).
The legislative history of the bill is also illuminating in that it addresses the interaction of SDPP with the Federal Crop Insurance Program. Although the statute “does not specify the emergency situations” in which assistance under SDPP would be provided, Senator Heflin provided “some idea of the situations in which the Secretary could reasonably be expected to implement the disaster payments program.” The list of examples, which was “not meant to be inclusive,” included situations in which:
(1) the Federal crop insurance policy excludes coverage for the disaster risk that caused the loss; (2) there was a lack of understanding of the crop insurance program among producers affected by the disaster; (3) the crop insurance program was not adequately sold in the area affected by the disaster, or the Federal Crop Insurance Corporation’s educational efforts were inadequate; or (4) the Federal Crop Insurance Corporation used an inaccurate actuarial basis so that a producer affected by the disaster was unable to obtain coverage adequate to protect his crop sufficiently.
S.Rep. No. 126, 97th Cong., 1st Sess. 78, reprinted in 1981 U.S.Code Cong. & Ad. News 1965, 2042-43.
The appellants also direct our attention to a General Accounting Office (GAO) Report on USDA disaster aid payments under the Agriculture and Food Act of 1981. That report noted that the Act vests substantial discretionary authority in the Secretary to make these aid payments, yet it concluded that “USDA’s use of this discretion should be based on objective criteria. However, USDA has not developed objective criteria to be used in awarding special disaster payments. This lack of criteria may result in subjective or inconsistent application of the Act.” United States General Accounting Office, Report to the Honorable Berkley Bedell, USDA Needs Objective Criteria for Awarding Special Disaster Payments (Nov. 2, 1982) 15.
B. Application of the Law.
Having reviewed the relevant legislative materials under the SDPP, we next review analogous case law to assist us in evaluating the statutes we have discussed. We find our recent decision in Allison v. Block, 723 F.2d 631 (8th Cir.1983), to be highly instructive. In that case, we considered the Secretary’s failure to implement a program entirely, not simply his failure to grant aid in a particular case.2 The Allisons, who had defaulted on Farmers Home Administration (FmHA) loans, sued the Secretary of Agriculture seeking a deferral of the foreclosure of their farm. The district court enjoined foreclosure bn the Allisons’ farm pending the Secretary’s compliance with the deferral statute, 7 U.S.C. § 1981a (1982),3 and we affirmed.
[351]*351In Allison, as in this case, the Secretary argued that, because section 1981a establishes no administrative procedural requirements nor substantive rights, the statute does not require any administrative action. Id. at 634. In rejecting this argument, we observed that the Secretary’s authority to defer foreclosure under section 1981a was predicated on two actions by the borrower which implicate procedural protections. First, the borrower must specifically request relief and, second, he must show that, due to circumstances beyond his control, he is temporarily unable to make payments without unduly impairing his standard of living. Id. Close reading of these provisions of the statute and the legislative history revealed that Congress intended that the Secretary notify borrowers of the availability of relief and that he promulgate “a uniform policy under which borrowers can make the requisite request and prima facie showing.” Id. (citing the statute and legislative history stressing, among other things, that the statute’s objective was to “giv[e] people a chance” at remaining solvent in farming).
In addition to finding the need for these procedural standards, we also determined in Allison that section 1981a “also requires the development of substantive standards at the agency level to guide the Secretary’s discretion in making individual deferral decisions.” Id. at 637. This conclusion was based upon the language in the statute which imposed upon the borrower the need to make a prima facie showing of circumstances beyond the farmer’s control and the potential for an impaired standard of living. Finally, finding the terms “policy” and “program” in the statute, we concluded that “Congress surely would not consider an empty procedural shell, with no substantive measure of relief, to be a policy at all.” Id.
With the methodology of the Allison case as our guide, we find that the Special Disaster Payments Program presents a straightforward case which compels judicial review of agency inaction. Despite the fact that the statute specifies three criteria for determining the inadequacy of federal crop insurance, the Secretary has deliberately taken no steps to implement proper procedures to protect applicants from potential abuses of discretion under the statute. Moreover, the criteria presuppose findings about the inadequacy of crop insurance; as in Allison, the criteria suggest a “prima facie standard of eligibility for relief,” id. at 637, yet without substantive elaboration by the Secretary, the criteria and the relief program become no more than “an empty procedural shell,” and the clear intent of Congress to establish a program is thwarted. We also observe that, as was the case in Allison, the legislative history of this measure relies on the word “program,” which becomes nonsensical unless the Secretary promulgates procedural and substantive standards under which disaster assistance can be disbursed. S.Rep. No. 126, 97th Cong., 1st Sess., Ill, reprinted in 1981 U.S.Code Cong. & Ad.News 2076. Given the clear guidance of the statute, its supporting materials and case law, then, we find ample law to apply and we reject the district court’s suggestion that judicial review was foreclosed by an absence of law.4
[352]*352It is not the business of this Court to order the Secretary to make payments under the SDPP to specific farmers. But when Congress has created a program which contemplates that such payments will be made in appropriate circumstances, it is the clear duty of the Secretary to promulgate regulations which carry out the intent of Congress.
III. STANDING.
The State of Iowa also challenges the district court’s conclusion that the State lacked standing to pursue this litigation, either by virtue of its own interests, or under a parens patriae theory.5 We consider each in turn.
A. The State’s Standing to Sue on Its Own Behalf.
As the courts have frequently noted, standing requirements arise out of the Constitution and out of the courts’ self-imposed prudential limitations on their own jurisdiction. See Allen v. Wright, — U.S. ---, ---, 104 S.Ct. 3315, 3324, 82 L.Ed.2d 556, 569 (1984). By thus carefully limiting the nature of the cases they hear, the federal courts “put the decision as to whether review will be sought in the hands of those who have a direct stake in the outcome,” Sierra Club v. Morton, 405 U.S. 727, 740, 92 S.Ct. 1361, 1369, 31 L.Ed.2d 636 (1972), and they “assure[] an actual factual setting in which the litigant asserts a claim of injury in fact.” Valley Forge Christian College v. Americans United for Separation of Church and State, Inc., 454 U.S. 464, 472, 102 S.Ct. 752, 759, 70 L.Ed.2d 700 (1982). With this end in mind, we review the sources and nature of the standing limitation.
Under Article III of the Constitution, the judicial power of the United States is limited to the resolution of “cases” and “controversies.” This familiar language has been interpreted by the Supreme Court “at an irreducible minimum” to require one seeking the courts’ protection to “ ‘show that he personally has suffered some actual or threatened injury as a result of the putatively illegal conduct of the defendant,’ * * and that the injury ‘fairly can be traced to the challenged action’ and ‘is likely to be redressed by a favorable decision.’ ” Valley Forge, 454 U.S. at 472, 102 S.Ct. at 758 (citations omitted).
The second category of self-imposed standing limitations are prudential principles which underscore the limitations embodied in Article III. Under these guidelines, the Court has required that a plaintiff “must assert his own legal rights and interests, and cannot rest his claim to relief on the legal rights or interests of third parties.” Warth v. Seldin, 422 U.S. 490, 499, 95 S.Ct. 2197, 2205, 445 L.Ed.2d 343 [353]*353(1975). Moreover, under this principle, the federal courts should eschew “abstract questions” and “generalized grievances” which afflict a broad spectrum of the public. Id. at 499-500, 95 S.Ct. at 2205. Finally, the Court has drawn a requirement which links the party seeking relief to the provision on which he relies: the plaintiffs complaint must fall within “the zone of interests to be protected or regulated by the statute or constitutional guarantee in question.” Association of Data Processing Organizations v. Camp, 397 U.S. 150, 153, 90 S.Ct. 827; 830, 25 L.Ed.2d 184 (1970).
The Supreme Court’s most recent standing discussion acknowledges the lack of “precise definitions” in this area and warns that the standing determination must not be converted to a “mechanical exercise.” Allen v. Wright, — U.S. ---, ---, 104 S.Ct. 3315, 3325, 82 L.Ed.2d 556, 570 (1984). The Court urged “careful judicial examination of a complaint’s allegations” which might include the following questions:
Is the injury too abstract, or otherwise not appropriate, to be considered judicially cognizable? Is the line of causation between the illegal conduct and injury too attenuated? Is the prospect of obtaining relief from the injury as a result of a favorable ruling too speculative?
Id.
Applying these tests to the facts in this case, we turn first to the constitutional issues of an injury in fact, its causal relationship to the defendant and the likelihood of redress by the remedy the appellants seek. In attempting to establish that it sustained an injury in fact, the State alleges that, but for the Secretary’s implementation of these disaster relief programs, agriculture production will suffer, which will dislocate agriculturally-based industries, forcing unemployment up and state tax revenues down. As a result, the State will face increased responsibility for the welfare and support of its affected citizens while its available tax revenues are declining. The district court found that these injuries were “generalized grievances, shared by each citizen of Iowa,” and it concluded that these injuries “fail to constitute distinct, palpable injuries to the State as a state.”6 We agree.
In reaching this conclusion, we follow the reasoning of the District of Columbia Circuit in Commonwealth of Pennsylvania v. Kleppe, 533 F.2d 668 (D.C.Cir.), cert denied, 429 U.S. 977, 97 S.Ct. 485, 50 L.Ed.2d 584 (1976), in which that Court denied standing to state officials seeking assistance from the Small Business Administration in rebuilding hurricane-ravaged businesses in Pennsylvania. That Court acknowledged that depleted tax revenues might be an actual economic harm to the State’s interests, id. at 672, but it denied standing on the ground that this type of economic loss “is the sort of generalized grievance about the conduct of government, so distantly related to the wrong for which relief is sought, as not to be cognizable for purposes of standing.” Id. It regarded the tax loss as “largely an incidental result of the challenged action” and required “some fairly direct link between the state’s status as a collector and recipient of revenues and the legislative or administrative action being challenged.” Id. See also Warth v. Seldin, 422 U.S. 490, 504-07, 95 S.Ct. 2197, 2207-09, 45 L.Ed.2d 343 (1975) (appellants failed to allege “an actionable causal relationship” between appellee’s zoning practices and appellants’ asserted injury).
Conversely, the determination that the State of New York had standing to sue the federal Bureau of the Census in Carey v. Klutznick, 637 F.2d 834, 838 (2d Cir.1980), was based on a loss to the State more closely linked to the act in question. In that case, the State alleged that the census had undercounted residents of the City of New York, which had the effect of diluting
[354]*354the votes of city residents and distorting legislative reapportionment leading to underrepresentation of the city in Congress. The Carey Court found a “concrete harm” in dilution of votes and reduction of federal funds, and concluded that the injury was “traceable to the Bureau’s actions.” Id. at 838, citing City of Camden v. Plotkin, 466 F.Supp. 44, 47-51 (D.N.J.1978) (citizens who challenged census undercounts alleging loss of funds “established both an injury fairly traceable to the Census Bureau and a substantial probability” that court intervention will remedy the plaintiffs’ injury). Likewise, in a variety of other cases, the Courts have found standing for the state when the link between the state and injury was more direct. State of New York v. Heckler, 719 F.2d 1191, 1195 (2d Cir.1983) (State has the right to litigate regulation requiring notification of parents regarding child’s use of contraceptives because state might be spending funds with illegal conditions attached); State of California v. Block, 690 F.2d 753, 776 (9th Cir.1982) (state may challenge environmental impact statement if it is geographically proximate to the site and statute requires state consultation as a prerequisite); Department of Energy v. Louisiana, 690 F.2d 180, 187 (5th Cir.1982), cert. denied, 460 U.S. 1069, 103 S.Ct. 1522, 75 L.Ed.2d 946 (1983) (state may challenge Department of Energy regulations which affect its finances adversely as a landowner and sovereign).
From these cases, we conclude that the State’s alleged injury is insufficiently proximate to the actions at issue and the remedy to be offered by this action an insufficient guarantee of solvency to warrant state standing in this case. In the words of the Kleppe Court, “the unavoidable economic repercussions of virtually all federal policies, and the nature of the federal union as embodying a division of national and state powers, suggest to us that impairment of state tax revenues should not, in general, be recognized as sufficient injury in fact to support state standing.” Kleppe, 533 F.2d at 672.
Having found that the State cannot establish a sufficient injury in .fact to satisfy the constitutional requirements of standing, we need not consider the prudential standing requirements. We do, however, consider the State’s standing as parens patriae.
B. Standing to Sue Parens Patriae on Behalf of the Citizens of Iowa.
The State also maintains that it has standing to sue on behalf of its citizens who might otherwise be unable to seek legal redress for themselves. Although some state parens patriae suits against the federal government have occasionally been allowed in the past,7 the most recent and well-reasoned discussions of this type of suit disallow its use against the federal government and reserve parens patriae instead for the state to vindicate the rights of its citizens against private defendants.
In the Supreme Court’s most recent consideration of the issue, it elaborated the requirements for parens patriae standing in general terms. Alfred L. Snapp & Son v. Puerto Rico, 458 U.S. 592, 607, 102 S.Ct. 3260, 3268, 73 L.Ed.2d 995 (1982). In a footnote, however, it qualified that discussion and disallowed state suits against the federal government on a parens patriae theory:
A State does not have standing as par-ens patriae to bring an action against the Federal Government. Massachusetts v. Mellon, 262 US 447, 485-86, 67 L.Ed. 1078, 43 S.Ct. 597 [600] (1923) (“While the State, under some circumstances, may sue in that capacity for'the protection of its citizens (Missouri v. Illinois, 180 U.S. 208, 241 [21 S.Ct. 331, 343, 45 L.Ed. 497]), it is no part of its duty or [355]*355power to enforce their rights in respect of their relations with the Federal Government. In that field it is the United States, and not the State, which represents them as parens patriae ”). Here, however, the Commonwealth is seeking to secure the federally created interests of its residents against private defendants.
Id. at 610, n. 16, 102 S.Ct. at 3270, n. 10. The D.C. Circuit had previously developed the rationale against state parens patriae suits against the federal government. That Court attributed the judicial unwillingness to liberalize parens patriae requirements to the general supervisory aspect of federal law and to the basic interests of federalism, “which reduce[] most basically to the avoidance of state interference with the exercise of federal process.” Commonwealth of Pennsylvania v. Kleppe, 533 F.2d 668, 677-78 (D.C.Cir.), cert. denied, 429 U.S. 977, 97 S.Ct. 485, 50 L.Ed.2d 584 (1976).
Although we recognize the considerable importance that the State of Iowa and its citizens place on the continued vitality of agriculture in the state’s economy, we cannot allow the State to proceed as parens patriae in this case. To do so would intrude on the sovereignty of the federal government and ignore important considerations of our federalist system.
IV. CONCLUSION.
Although we conclude that the State is without standing to pursue this action, the remaining appellants may do so on remand. On remand, the district court should promptly hold a hearing to consider appellants’ requests for preliminary and permanent injunctive relief compelling the Secretary to implement the SDPP. The district court should note especially the imperative language in the statute (“shall” make disaster payments) and the close similarity that the plight of Iowa’s farmers bears to the disasters contemplated by the statute and its legislative history. We express no opinion as to whether the Secretary ought to develop the statute’s substantive standards under formal rulemaking procedures or individual adjudications. As we noted in Allison, formal rulemaking “would better insure a uniform set of substantive standards,” but case-by-case adjudication may allow the consistent precedential use of previous decisions. Allison, 723 F.2d at 637-39. Whatever method is chosen, we emphasize that, if the programs are to be implemented, they must be implemented quickly so that eligible farmers may receive assistance at the earliest possible date.