The Alien Enemies Act: What to know about a 1798 law that Trump has invoked for deportations

President Donald Trump on Saturday invoked the Alien Enemies Act for the first time since World War II, granting himself sweeping powers under a centuries-old law to deport people associated with a Venezuelan gang. Hours later, a federal judge halted deportations under Trump’s order.

The act is a sweeping wartime authority that allows non-citizens to be deported without being given the opportunity to go before an immigration or federal court judge.

Trump repeatedly hinted during his campaign that he would declare extraordinary powers to confront illegal immigration and laid additional groundwork in a slew of executive orders on Jan. 20.

His proclamation on Saturday identified Venezuela’s Tren de Aragua gang as an invading force. U.S. District Judge James E. Boasberg, who was appointed by President Barack Obama, blocked anyone from being deported under Trump’s proclamation for two weeks and scheduled a Friday hearing to consider arguments.