A conservative legal group has filed the first federal lawsuit challenging an emergency power President Donald Trump used to impose tariffs on China. 

On Thursday, the New Civil Liberties Alliance filed a complaint in the U.S. District Court for the Northern District of Florida against Trump’s tariffs on China. The president used authorities under the International Emergency Economic Powers Act to place a 10% tariff on imports from China on Feb. 1 and later doubled the number to 20% on March 3.