Under U.S. immigration law, a country such as El Salvador can accept someone deported from the U.S. who isn’t a citizen of that country if the person’s homeland refuses to accept them, says Theresa Cardinal Brown, a former homeland security official under the administrations of Presidents George W. Bush and Barack Obama.

After meeting Secretary of State Marco Rubio, El Salvador's president has offered to house U.S. deportees and even American inmates in his country's "mega-prison."

CBS News' Lilia Luciano got a rare look at El Salvador's prison system after President Nayib Bukele offered to house dangerous deported migrants from the U.S. This comes as President Trump continues his efforts to crackdown on illegal immigration.