Chevron’s Wake and the Return of Judicial Spine

The U.S. Constitution assigns “[a]ll legislative Powers” to Congress and “the executive Power” to a single President. At first glance, this division might suggest that Congress cannot delegate meaningful authority to any other person or entity. Yet, Article I must be read alongside Article II, and in practice, the federal government has never operated under such strict separation: Congress legislates, the President executes, and courts interpret. As federal bureaucracy has expanded, this balance evolved into the modern nondelegation doctrine, a principle that acknowledges Congress’s need to grant discretion while maintaining constitutional limits. The end of Chevron marks a shift in who bears the institutional costs of congressional ambiguity. When Congress leaves consequential policy choices to implication, the need for discretion does not disappear; after Loper Bright, it will more often be exercised by courts through judicial review, unless Congress supplies clearer delegations, firmer boundaries, and more explicit decision rules.

A strict nondelegation rule that treats broad statutory standards as presumptively unconstitutional would not bring back legislative supremacy. Most of the hard policy choices would just move to courts, because judges would then have to decide which statutes are “too broad” and which ones survive. It is easy to confuse interpretation with authorship. The Constitution does not calibrate delegation by judicial unease or personal preference; the intelligible-principle inquiry asks whether Congress supplied a standard that guides and confines discretion, but not whether a court would have drafted a narrower statute. When Congress states a policy and draws real boundaries, politically answerable officials can then implement it, and courts can enforce those boundaries while refusing to “discover” powers the statute never granted, as in Youngstown’s refusal to treat necessity as law.

Intelligible Principle as Constitutional Settlement

Since J. W. Hampton, Jr. & Co. v. United States, the Court has applied a simple rule: Congress may authorize others to act if it supplies an intelligible principle to guide them. There were famous departures (Panama Refining and Schechter Poultry during the New Deal Era), but that basic rule has supported most of the modern administrative state. So Congress need not legislate every operational detail, but it still has to make the larger policy calls and identify the factors that matter.

Recent cases show the Court’s reluctance to treat vague or ancillary text as a transfer of sweeping authority. In West Virginia v. EPA and Biden v. Nebraska, the Court declined to read older statutes as authorizing programs of major economic and political consequence without clear congressional authorization. And in Seven County Infrastructure Coalition v. Eagle County, the Court rejected a lower court’s attempt to use NEPA’s generalities to ratchet up review beyond effects the agency could fairly be said to cause or control. Taxation makes the point more concrete: courts have reason to demand clearer statutory markers and limits if the claimed discretion falls within the purposes of raising revenue or to shift general economic burdens. If Congress wants to authorize new duties or tariffs that materially change economic burdens, it knows how to do it, and it has done so, including in trade statutes such as Section 232. Courts have every reason to, and should, hesitate before concluding that Congress quietly sculpted a general revenue lever from a pretty specific, targeted tool.

Some legal scholars try to turn this into a separate “fundamental powers” test. It really isn’t. It’s the same inquiry, just with sharper attention for when the claimed authority starts to resemble the taxing power. As the Court decided in J. W. Hampton, Jr. & Co., the intelligible principle still has to be found within the statute. But when that asserted authority somehow turns into a standing and power to reset economic baselines, courts should absolutely be wary of treating silence and stray language as permission to set tariff rates, or otherwise impose economy-wide burdens with tax-like effect. If Congress meant to delegate that continuing tariff authority, shouldn’t Congress have said so in the text?

Who’s Filling What Gaps From Chevron to Loper Bright

For decades, the precedent laid out in Chevron offered a workable division of labor once a delegation cleared the intelligible principle threshold. If Congress was clear enough, courts enforced the command: “If the intent of Congress is clear, that is the end of the matter…” But if the statute left real ambiguity or used open-ended language, and the administering agency adopted a reasonable construction, the agency usually won: “the question for the court is whether the agency’s answer is based on a permissible construction of the statute.” In practice, Chevron left most policy-laden gap-filling within statutory ambiguity to the executive branch, while courts policed the statutory edges.

Chevrondid not necessarily expand Congress’s power to delegate, at least not in the conventional sense. It assumed a valid delegation and then addressed what to do with interpretive uncertainty inside it, so agencies could act when Congress wrote broadly and unforeseen applications arose. Congress uses open-textured standards constantly, such as “public interest” and “requisite to protect public health,” because it cannot foresee every potential application of the law. But over time, broad terms established by Congress require real-world working meanings.  As U.S. Supreme Court Justice Elena Kagan points out, Chevron treated the choice among permissible meanings within statutory ambiguity, within limits, as work for politically accountable branches rather than courts. Chevron reduced the cost of congressional ambiguity by letting agencies supply operational meaning, while Loper Bright raised that cost by shifting more of that meaning-making burden to courts.

Chevron is not the only doctrine that sharpens the division of labor among Congress, agencies, and courts. Two recent decisions make the allocation point explicit in different registers. Loper Bright reassigns the work of resolving statutory ambiguity, and Seven County clarifies what restraint looks like when courts claim independent judgment in a world full of broad, open-textured statutes.

Loper Bright Enterprises v. Raimondo (2024) changed more of the interpretive stance than it changed the statutory world Congress has written into the U.S. Code. Courts now exercise independent judgment on questions of law, and that can be a slippery move. Broad statutory language does not suddenly shrink on its own. What changes is who is expected to do more of the interpretive heavy lifting when Congress writes in vague and expected generalities. Seven County Infrastructure Coalition v. Eagle County (2025) reinforces the same point. NEPA is full of general, open-ended instruction, and the Court pushed back on a lower court that treated that openness as a license to ratchet up what the statute demands, including by forcing review of effects the agency neither caused nor controlled. That is a useful reminder for a post-Loper Bright world. Broad standards still matter, but they do not invite courts to “complete” Congress’s handiwork by adding procedural hurdles the text does not fairly require. If unelected judges are going to insist on independent judgment about what the law means, they also have to live with the limits of the text: interpret what Congress enacted, enforce the boundaries it actually drew, and avoid turning general language into a judge-made veto over executive action.

Major Questions Without a Nondelegation Revolution

Recent cases concerning major questions doctrine do add another complication, do not require restructuring the existing framework for judicial interpretation of congressional statute completely. In West Virginia v. EPA (2022) and Biden v. Nebraska (2023), the Court refused to read older, broad statutes as authorizing sweeping policies with vast economic and political consequences unless Congress was clear. Some commentators describe this as nondelegation by another name; others call it judicial overreach. 

There is a narrower way to understand what the Court is doing. 

Major questions doctrine functions as a demand for unmistakable statutory authorization in high-stakes settings. When an agency claims authority to restructure major sectors of the economy or cancel financial obligations on an enormous scale, courts want clearer textual evidence that Congress meant to grant that authority. The Court is not saying Congress can never delegate power of that magnitude. The point is that Congress should take responsibility for that delegation and do so in the proper manner.

That responsibility-forcing instinct cuts both ways. Reviewing courts have the right to demand clarity about what is being authorized before treating vague or ancillary statutory language as a transfer of sweeping authority–or as an implied decision to condition or disable ordinary presidential supervision of high-stakes executive functions. Otherwise separation-of-powers fights get litigated through implication, and the fog invites improvisation by agencies, by Presidents, and then by courts. Importantly, rules that demand unmistakable statutory footing are not automatically anti-executive. They can protect executive energy by making major constraints show up in enacted text, instead of being inferred from ambiguity.

Tariffs are a clean test case for responsibility-forcing interpretation: because they operate in practice like a standing tax and can reset economic baselines, courts should require clear congressional authorization before treating general statutory language as an implied license to impose duties or reorder markets. Tariffs can shift burdens across industries and move consumer prices in ways that are difficult to unwind. That is precisely why courts should be slow to read vague or incidental text as delegating continuing tariff-setting authority unless Congress has acted in a register that matches an instrument of that magnitude.

Executive Power and Statutory Discipline 

Executive authority is strongest when large grants of power are clear and durable, and discretion operates inside them. Presidents need flexibility to respond to crises and manage security threats. Congress has repeatedly granted that flexibility through defense authorizations, sanctions regimes, trade statutes, and emergency powers, usually accompanied by reporting requirements and internal checks. When courts enforce those features, they preserve the original bargain, present in the Constitution, that the political branches struck: serious authority on terms Congress enacted, carried into effect by a single, accountable executive–Hamilton’s ‘energy in the executive’ point, stated without romance

The executive branch undercuts itself when it treats ambitious readings of marginal provisions as normal. In the short run, a strained construction can expand what the executive claims it may do invoking emergency necessity. In court, however, the government must defend the move as a faithful reading of enacted text, and an adverse decision rarely stays limited to the immediate program. The resulting opinions tend to supply limiting principles that narrow the statute’s usable range and create a precedent-based skepticism toward later assertions of discretion under the same authority. Congress rarely returns to clarify what it meant or to restore authority in cleaner terms, so the executive inherits both thinner text and worse precedent. After enough iterations of “discovery” in old language, judges look for a doctrinal nexus that can police the pattern with administrable constraints as opposed to a case-by-case permission. That is where clear-statement demands and major-questions skepticism take hold, and once they do, they tend to sweep up careful, text-grounded exercises of delegated power along with aggressive ones.

This is where executive strength depends on self-restraint and careful statecraft. The goal is a presidency that can act decisively in crisis, can act in the interest of their mandate, while being allowed that flexibility by law, without having to improvise statutory authority at the margins. Sometimes that means conceding a limit: this statute does not authorize that move. If the executive branch does that consistently, it pays off. It keeps interpretation tied to real grants, reduces incentives for judicial crackdowns, and leaves more room for energetic administration when Congress has actually given the green light.