India, April 12 -- The centerpiece of President Donald Trump's economic policy - sweeping taxes on global imports - is under legal assault again.

The U.S. Court of International Trade, a specialized court in New York, heard oral arguments Friday in an attempt to overturn the temporary tariffs Trump turned to after the Supreme Court in February struck down his preferred choice - even bigger, even more sweeping tariffs.

In his first attempt to impose global tariffs, the president last year invoked the 1977 International Emergency Economic Powers Act (IEEPA), using the law to declare America's long-standing trade deficit a national emergency and to impose double-digit worldwide taxes on imports to combat it. He interpreted the law broadly ...