The US Supreme Court is scheduled to hear arguments on Wednesday at 10am ET (local time) over the legality of sweeping tariffs imposed by Donald Trump - a case that could reshape the reach of presidential power and ripple through the global economy. The dispute centres on Trump’s invocation of the international emergency economic powers act (IEEPA) - a 1977 law meant for national emergencies - to levy tariffs on nearly every US trading partner. The administration contends the tariffs are justified as measures to protect national security and the economy. Lower courts, however, ruled he exceeded his authority. If the Court strikes down the tariffs, the effect could extend far beyond US trade: the government collected an estimated $89 billion between February 4 and September 23 u

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