The law lets the president skip the usual immigration court process to detain and deport anyone age 14 or older who is from or the citizen of a “hostile nation or government.”

President Donald Trump has 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.

President Trump says he’s using the 227-year-old law to crack down on Venezuela’s Tren de Aragua gang. The move is already facing a legal challenge. Here’s a look at key questions and answers about the Alien Enemies Act.