The fate of President Donald Trump’s sweeping “Liberation Day” tariffs on foreign imports may play out in court, after the first major legal challenge to them was filed in court Monday, as conservative lawyers have alleged the president is exceeding his authority by enacting tariffs under the International Emergency Economic Powers Act (IEEPA).

A lawsuit filed Monday challenges the legality of President Trump’s worldwide, across-the-board tariff hikes. The Liberty Justice Center, a libertarian-leaning public-interest law center based in Texas,

President Trump’s “Liberation Day” tariffs came under their first major legal challenge Monday, brought by a libertarian public-interest firm that argues the president overstepped his