The Trump administration is expected to invoke a sweeping wartime authority to speed up the president’s mass deportation pledge in the coming days, according to four sources familiar with the discussions.

President Trump is expected to invoke an 18th century law giving him wartime powers to deport migrants en masse. He intends to apply the Alien Enemies Act of 1798 as soon as Friday, multiple sources have confirmed to CNN.

Authorities plan to mainly target members of Tren de Aragua, a violent Venezuelan gang.