President Bukele, who labels himself as the "coolest dictator" and a "philosopher king," has built election success and immense popularity on an extreme security policy to combat gang violence in El Salvador, incarcerating large quantities of alleged gang members and securing a massive drop in homicides.

El Salvador has offered to take in people deported from the U.S. for entering the country illegally as well as the country’s violent criminals — even if they’re American citizens.

The US has agreed an "unprecedented" migrant deal with El Salvador, with the country offering to accept deportees from any country - including criminals.