Overview
- Three conservative justices—Chief Justice John Roberts, Neil Gorsuch and Amy Coney Barrett—joined the liberals in the majority, with Clarence Thomas, Samuel Alito and Brett Kavanaugh dissenting.
- The ruling voids Trump’s “reciprocal” tariffs and country‑specific duties on Mexico, China and Canada imposed under IEEPA, while measures based on other laws such as steel, aluminum and certain auto‑related tariffs remain in place.
- The government faces potential refund exposure on revenues collected under the invalidated tariffs, with estimates ranging from more than $175 billion (Penn‑Wharton) to roughly $240 billion, though the scope and mechanics are unresolved.
- Stocks rose in Europe and on Wall Street after the decision, as the EU, Canada and the UK sought clarity on near‑term trade conditions and the status of existing arrangements.
- The administration signaled it is exploring alternative legal paths such as Trade Act sections 122 and 301, national‑security tariffs under section 232, possible use of Tariff Act section 338, or seeking congressional authorization.