Secretary of State Marco Rubio announced last week that President Nayib Bukele of El Salvador had agreed to accept deportees from the U.S. convicted of crimes, and also offered to house incarcerated Americans in El Salvador's prisons.

El Salvador's president is offering to take in deportees and U.S. criminals at its prisons, including American citizens. CBS News correspondent Lilia Luciano got a rare first-hand look inside one of its mega prisons.

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.

Bukele said he would charge the United States a "relatively low" fee to house convicted criminals in El Salvador's Terrorism Confinement Center, or CECOT, a mega-prison built to hold up to 40,000 people. He said the nominal cost for America would help make El Salvador's prison system sustainable.