Supreme Court Limits Executive Power in Tariffs Ruling
The Supreme Court issued a landmark ruling on Thursday limiting presidential authority in a major separation of powers case, holding that President Donald Trump lacked the power under the International Emergency Economic Powers Act (IEEPA) to impose sweeping tariffs on imported goods. The decision, which legal experts are comparing to the historic 1952 Youngstown Sheet & Tube Co. v. Sawyer case, comes as the Court races to decide several other blockbuster cases before the term ends in late June.
The Landmark Ruling
In Learning Resources, Inc. v. Trump, Chief Justice John Roberts wrote for the majority, emphasizing that statutory authority must be grounded in clear congressional intent, particularly where the executive asserts sweeping economic powers. The Court held that tariffs, as a core tool of trade policy, fall squarely within Congress’s domain unless explicitly delegated.
As NPR reported, the decision struck down the president’s tariff program because “Congress had not authorized it, and Trump exceeded his authority in doing it on his own.”
NYU Law Professor Richard H. Pildes called the ruling “the most significant instance since the Korean War-era case involving former President Harry S. Truman’s attempt to seize steel mills that a court has deemed presidential actions unlawful.” The Youngstown case established the foundational principle that the president cannot exercise legislative power without congressional authorization.
The Wall Street Journal editorial board described the decision as a “landmark defense of the constitutional principle of separation of powers,” stating that “the Supreme Court has shown its resolve to check executive overreach by all future presidents, regardless of party.”
President Trump denounced the ruling, calling the justices “fools and flatterers” and “a disgrace to our country.” Despite his strong rhetoric, he announced plans to comply by withdrawing some tariffs imposed under the national emergency authority.
Pending Major Cases
The Court still has approximately 23 cases left to decide from the 58 argued this term. Among the most consequential pending cases:
Birthright Citizenship: In Trump v. Barbara, the Court is considering whether Trump’s executive order barring citizenship for children born in the U.S. to noncitizen parents violates the 14th Amendment. Every lower court judge to review the order has concluded it is unconstitutional.
Independent Agency Authority: In Trump v. Slaughter, the Court is weighing whether the president can fire the heads of independent agencies like the Federal Trade Commission at will. A ruling for Trump could fundamentally reshape the structure of the federal government, eliminating the independence of agencies that have operated autonomously for decades.
Federal Reserve Independence: In Trump v. Cook, the justices are considering whether the president can fire members of the Federal Reserve Board. The case has prompted considerable anxiety among economists and business leaders.
Immigration and TPS: Two cases — Mullin v. Doe and Trump v. Miot — challenge the administration’s efforts to end Temporary Protected Status for migrants from Haiti and Syria. More than 300,000 Haitians have been living legally in the U.S. under TPS since the 2010 earthquake.
Voting Rights: Watson v. Republican National Committee examines whether Mississippi can count mail-in ballots that arrive after Election Day, a practice currently allowed by 29 states.
Other pending cases address gun rights, transgender athlete participation in sports, campaign finance coordination limits, geofencing warrants, and Roundup/Monsanto weedkiller liability.
Historical Significance
The Learning Resources decision represents one of the most significant curbs on presidential power in decades. The Guardian described the ruling as “critical evidence to the world that the U.S. government system based on the rule of law has not completely collapsed.”
The Court’s 6-3 conservative majority has not always followed partisan lines on executive power questions. Legal analysts widely regard the 2025-2026 term as one of the most consequential in modern Supreme Court history, with cases that will define the boundaries of presidential authority for years to come.
What to Watch For
The Court is expected to conclude its term by the end of June or early July. The remaining decisions will determine:
- Whether the president can unilaterally end birthright citizenship
- The fate of independent federal agencies
- The scope of deportation protections for hundreds of thousands of migrants
- Voting procedures for future federal elections
The Trump administration is already exploring alternative statutory pathways to achieve its tariff goals, signaling that the constitutional debate over the separation of powers is far from over.