President Donald Trump, who made the deportation of immigrants a central part of his campaign and presidency, said Wednesday that the U.S. will use a detention center at Guantánamo Bay, Cuba, to hold tens of thousands of the “worst criminal aliens.

President Donald Trump said Wednesday that he is directing the opening of a detention center at Guantanamo Bay to hold up to 30,000 immigrants who are living illegally in the United States. People who are in the United States illegally and are accused of theft and violent crimes would have to be detained and potentially deported even before a conviction.