Five American small businesses will ask a U.S. court on Tuesday to halt President Donald Trump's "Liberation Day" tariffs, arguing the president overstepped his authority by declaring a national emergency to impose across-the-board taxes on imports from nations that sell more to the U.

The U.S. Court of International Trade heard arguments Tuesday over whether to block President Donald Trump’s “Liberation Day” tariffs as litigation against the levies moves forward, though judges gave little indication of their views on the president’s sweeping policy,