Three conservative justices raised questions about whether an emergency law gives Trump near-limitless power to set and change duties on imports, with potentially trillion-dollar implications for the global economy

A majority of Supreme Court justices seemed skeptical on Wednesday about US President Donald Trump's ability to unilaterally impose far-reaching tariffs, putting at risk a cornerstone of his agenda in the biggest legal test yet of his unprecedented presidency. Three conservative justices raised questions about whether an emergency law gives Trump near-limitless power to set and change duties on imports, with potentially trillion-dollar implications for the global economy.

The court's three liberal justices also appeared dubious, so at least two conservative votes could limit

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