Rubio has left El Salvador with an agreement to accept deportees from the U.S. of any nationality, including Americans

He met with Salvadoran President Nayib Bukele and senior officials at Bukele's residence on Lake Coatepeque outside the capital for almost three hours, where they agreed to go beyond El Salvador's acceptance of its own deported citizens.

Under an unprecedented deal reached this week, El Salvador has agreed to accept deportees from the US of any nationality, including violent American criminals.