High tariffs on America's trading partners are likely to remain in place even if the Supreme Court rules that President Trump improperly invoked federal emergency powers to impose the levies, according to trade experts.

In a hearing on Wednesday, several of the high court justices appeared skeptical of Mr. Trump's use of the 1977 International Emergency Economic Powers Act (IEEPA) to implement sweeping tariffs on nearly every country. Trump administration officials say the policies are needed to reduce the nation's trade deficit and spur domestic manufacturing .

Ted Murphy, co-leader of the global arbitration, trade and advocacy practice at law firm Sidley Austin, said Mr. Trump is unlikely to abandon tariffs, noting that the president has other legal tools at his disposal to ma

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