WASHINGTON – President Donald Trump is threatening to deport millions of people living in the United States illegally, heralding a plan that could help energize his supporters just ahead of formally announcing his reelection bid . The U.S. Immigration and Customs Enforcement next week will "begin the process of removing the millions of illegal aliens who have illicitly found their way into the United States," Trump said in a pair of tweets Monday night. "They will be removed as fast as they come in," he wrote. An administration official said the effort would focus on the more than 1 million people who have been issued final deportation orders by federal judges but remain at large in the U.S.