On Wednesday, the Supreme Court will hear arguments on whether President Donald Trump exceeded his executive authority by invoking the International Emergency Economic Powers Act to implement his sweeping tariffs without congressional approval.

The outcome of the case, which could potentially unwind Trump’s core economic policy of levying tariffs on imported goods everywhere from Canada to China, will have all eyes on the highest court in the land, with significant legal, political and economic ramifications at stake.

“If the court holds against the president, which I think is a reasonable possibility, it’ll be one of the most significant Supreme Court rulings against presidential power ever,” Curtis Bradley, a University of Chicago law professor and an expert on executive authority, sai

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