Supreme Court Nullifies Trump’s Emergency Tariff Authority, Re-empowering Congress

Presidential overreach on economic powers has been checked before—most famously in Youngstown Sheet & Tube Co. v. Sawyer (1952) when the Court blocked Truman’s wartime steel seizure—but this is the first time since the 1930 Smoot-Hawley era that the Court has voided tariffs already in force. The ruling crystallizes a long arc: since the Reciprocal Trade Agreements Act of 1934 Congress has delegated ever-more tariff discretion to the White House; today’s decision signals a pendulum swing back toward legislative control amid rising economic nationalism. In a century-scale view, whether this moment endures depends on Congress: if lawmakers reclaim trade authority, it could restore the post-1945 rules-based order; if they continue to delegate, future populist presidents may simply seek alternative statutes. Either way, the verdict underscores that constitutional guardrails, though stretched, still function—an institutional resilience likely to echo long after the headlines fade.