WASHINGTON (AP) — Three lower courts have ruled illegal President Donald Trump’s use of emergency powers to impose worldwide tariffs. Now the Supreme Court, with three justices Trump appointed and generally favorable to muscular presidential power, will have the final word.

In roughly two dozen emergency appeals, the justices have largely gone along with Trump in temporarily allowing parts of his aggressive second-term agenda to take effect while lawsuits play out.

But the case being argued Wednesday is the first in which the court will render a final decision on a Trump policy. The stakes are enormous, both politically and financially.

Trump has made tariffs a central piece of his economic and foreign policy, and has said it would be a “disaster” if the Supreme Court rules against him.

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