The Supreme Court rules Trump’s tariffs illegal in a landmark decision that reshapes U.S. trade policy and limits presidential authority over emergency economic powers.

In a 6–3 ruling, the court held that former President Donald Trump violated federal law when he imposed sweeping tariffs on multiple countries without clear congressional authorization. Chief Justice John Roberts authored the majority opinion, concluding that the measures exceeded the scope of authority granted under existing statutes.

Court Cancels Reciprocal and Fentanyl-Linked Tariffs

The decision strikes down two major categories of tariffs. The first involves “reciprocal tariffs,” which ranged from 34 percent on imports from China to 10 percent on goods from other countries. Trump introduced these duties as part of a broader strategy to rebalance trade relationships.

The ruling also eliminates tariffs imposed on certain goods from Canada, Mexico, and China that the administration had justified as leverage to curb fentanyl trafficking. The court found that the executive branch lacked sufficient statutory grounds to enforce those trade penalties under emergency provisions.

However, the justices left intact other tariffs, including those on steel and aluminum that Trump enacted under separate trade laws. Those measures remain unaffected by the ruling.

Financial Impact and Refund Claims

Companies that paid the invalidated tariffs can now seek reimbursement from the U.S. Treasury. Hundreds of businesses have already filed claims to recover funds collected under the struck-down measures.

The court did not address the more than $130 billion already generated from the tariffs. Over the next decade, analysts had projected that the emergency tariffs would raise approximately $1.5 trillion in revenue.

The ruling marks a significant constitutional check on executive trade authority and clarifies the limits of presidential power in imposing global tariffs without explicit legislative backing.

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