Current laws “would categorically preclude most U.S. citizens and residents from serving their sentence in El Salvador,” a former U.S. attorney said.

El Salvador’s strongman President Nayib Bukele announced his country has offered the U.S. the opportunity to “outsource part of its prison system.”

Marco Rubio, who is on his first oversees tour as the top US diplomat, is seeking support from countries in the region for the Trump administration's attempts to deport large numbers of migrants.