What is the Alien Enemies Act? It's an 18th-century law that allows the president to detain or deport immigrants from countries the U.S. is at war with. In more than 225 years, the law had been invoked just three times,

A Trump-appointed judge in Pennsylvania has decertified a potential class of plaintiffs who were challenging their designation under the Alien Enemies Act.

A federal judge in New York ruled that the Trump administration does not have legal justification to deport Venezuelan immigrants under the Alien Enemies Act.