U.S. businesses sue to block Trump tariffs, say trade deficits are not an emergency
1. Small businesses sue Trump over new tariffs on foreign imports. 2. Lawsuit claims tariffs illegally usurp Congress' power on trade. 3. Asserted trade deficits lack merit as an emergency basis. 4. Court to determine legality of tariffs under IEEPA. 5. Case emphasizes 'no taxation without representation' principle.