The Alien Enemies Act of 1798 gives the president wartime powers to deport undocumented immigrants with little to no due process.

A Justice Department attorney was grilled at a court hearing about whether the government willfully defied an order to return deportation flights to the United States.

President Trump on Friday deflected when asked if he signed the order to invoke the Alien Enemies Act, an 18th-century wartime law, to deport Venezuelan migrants allegedly linked to the Tren de