(The Center Square) – A nonprofit group told the nation's highest court that even if a 1977 law that doesn't mention tariffs gives the president unbounded tariff authority, Congress doesn't have the authority to delegate that kind of "immense power."

Trump has focused his economic agenda on tariffs. A group of small businesses, some Democrat-led states, and two education businesses have challenged the president's tariff authority under the International Emergency Economic Powers Act of 1977.

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