President Donald Trump meets on Monday with El Salvador President Nayib Bukele, a leader praised by the administration for opening his country's prison system to alleged gang members and detainees Trump wants out of the United States.

The Trump administration has authorized hundreds of prior deportations, some on the basis of little more than whether the subjects had tattoos or had worn clothing associated with a criminal organization.

Kilmar Abrego Garcia, a Salvadoran migrant who lived in the U.S. legally with a work permit and was erroneously deported to El Salvador, is seen wearing a Chicago Bulls hat, in this handout image obtained by Reuters on April 9,