President Donald Trump has asked the U.S. Supreme Court to endorse sweeping presidential powers over taxation, spending and Federal Reserve governance through a trio of cases that, if decided for the former president, would markedly expand executive control over core economic levers.
The cases involve challenges to the tariffs Mr. Trump imposed in his second term, a dispute over the president’s authority to withhold congressionally mandated foreign aid, and litigation over whether a president may remove Federal Reserve governors who are statutorily protected from at‑will dismissal. The legal questions touch on the International Emergency Economic Powers Act, the Impoundment Control Act and the statutory protection that allows Fed governors to be removed only "for cause."
Two tariff challenges, styled Trump v. V.O.S. Selections and Learning Resources v. Trump, are set for argument in November. Federal judges across multiple courts have concluded that Mr. Trump exceeded his authority when he imposed a series of import taxes, and the amount at stake is substantial. Trump’s legal team has argued the tariffs will reduce federal deficits by $4 trillion over coming years; independent researchers, including Yale’s Budget Lab, estimate the measures could raise about $2.4 trillion over 2026–35 if they remain in place.
The government says the tariffs fall within the International Emergency Economic Powers Act of 1977, or IEEPA, a law that allows the president to regulate certain transactions when addressing an "unusual and extraordinary threat." Critics and several judges have questioned whether IEEPA permits the kind of large-scale import levies Mr. Trump imposed, with some rulings holding that the statutory power to "regulate" imports does not include the authority to impose broad taxes and that the administration had not identified the requisite national emergency.
Those challenges intersect with the Supreme Court’s modern "major questions" jurisprudence, a doctrine developed in recent terms to require clear congressional authorization when administrative actions have vast economic or political significance. Scholars and some lower-court judges have said the decision to raise trillions of dollars through presidential action would implicate that doctrine; whether the Court applies it in disputes involving a president of its own party remains an open question.
A second matter, Department of State v. AIDS Vaccine Advocacy Coalition, is pending on the Court’s shadow docket, a procedural channel the justices use for emergency requests and other expedited matters that they sometimes decide without full briefing or opinion. The case centers on whether the president may "impound"—that is, refuse to obligate or spend—funds that federal law requires be committed by a statutory deadline.
The specific dispute concerns roughly $4 billion in foreign aid for which a statute required the government to commit funds by Sept. 30. The Impoundment Control Act allows a president to transmit a request to Congress to repeal or defer an obligation, giving Congress 45 days to act. The administration argues that transmitting such a request suspends the spending obligation while Congress considers it and that, if the deadline passes without action, the obligation lapses.
AIDS Vaccine plaintiffs contend the administration did not comply with procedural requirements in transmitting the request to Congress. They also point to statutory language in the Impoundment Control Act stating that nothing in the act "shall be construed as... affecting in any way the claims or defenses of any party to litigation concerning any impoundment," which they argue preserves court challenges by affected parties. Last week, Chief Justice John Roberts issued a temporary order permitting the administration to withhold certain foreign aid while the Court considers the matter, an interim step that has renewed attention to longstanding consensus among legal scholars that unilateral impoundment is unlawful.
The third case, Trump v. Cook, concerns presidential authority over the Federal Reserve’s Board of Governors. By statute, Fed governors serve staggered 14‑year terms and may be removed by the president only "for cause." Mr. Trump sought to remove Governor Lisa Cook, a Biden appointee, alleging mortgage‑related misrepresentations about her primary residence. News reports, including one by Reuters, have raised questions about those factual allegations, noting a lender’s records that described one property as a vacation home and indicating the lender was aware it was not a primary residence.
A federal appeals court denied the administration’s effort to validate the removal, in a decision that included a dissent from a judge who previously served in the White House. The case could reach the Supreme Court as soon as the coming days. Legal advocates for the Fed’s independence and some members of the judiciary have stressed that Congress insulated the central bank’s leadership to prevent politically motivated interference with monetary policy.
If the Court were to allow a president to remove Fed governors without the statutory for‑cause standard, it would alter an established safeguard intended to give the Fed operational independence from short‑term political considerations. Historical examples have been cited in briefs and commentary: pressure on the Fed for politically favorable rate decisions has been linked by some historians and economists to later economic instability.
Legal analysts note broader constitutional implications if the Supreme Court upholds the administration’s positions across these cases. The Constitution vests the power to "lay and collect Taxes" and the power of the purse with Congress, and the Appropriations Clause states, "No Money shall be drawn from the Treasury, but in Consequence of Appropriations made by Law." The Antideficiency Act criminalizes federal spending in excess of appropriations; prosecutors can pursue government employees who violate that law. But the president’s pardon power and recent high‑profile litigation over presidential immunity have prompted debates about whether criminal enforcement alone would serve as an effective check on an expanded executive.
The three cases therefore present interconnected questions about separation of powers: who may raise or levy significant revenues, who controls whether and when congressionally authorized funds are spent, and who can direct or dismiss the officials who shape national monetary policy.
The Supreme Court’s decisions in these matters could have wide economic ramifications. A ruling that upholds the tariff program would validate a mechanism by which the president can impose large‑scale trade levies under an emergency statute. A decision endorsing the administration’s impoundment theory would allow presidents to delay or refuse to obligate congressionally mandated spending under narrow timelines. And a ruling that permits removal of Fed governors outside the statutory "for cause" standard would reshape the institutional independence of the Federal Reserve.
Court watchers say the cases will test doctrinal doctrines the justices have developed recently and could clarify how, or whether, those doctrines apply when the executive branch at issue is led by a former president now pursuing novel assertions of authority. The cases are likely to be argued and decided at different times: the tariff cases have argument dates in November, AIDS Vaccine remains on the shadow docket with interim relief already granted, and the dispute over Federal Reserve removals may reach the justices shortly.
Until the Court issues rulings, lower courts’ findings and temporary orders will continue to govern in the short term. The Supreme Court’s approach to the questions posed by these cases will be closely watched by lawmakers, markets and legal scholars for their potential to reshape the balance of economic power among the branches of government.