Kilmar Ábrego García, a 29-year-old from El Salvador who was mistakenly deported in March, has been returned to the US to face prosecution on two federal criminal charges.
He has been accused of participating in a trafficking conspiracy over several years to move people from Texas to other parts of the country.
El Salvador agreed to release Mr Ábrego García after the US presented it with an arrest warrant, Attorney General Pam Bondi said on Friday. His lawyer has called the charges "preposterous".
The White House had been resisting a US Supreme Court order from April to "facilitate" his return after he was sent to a mega-jail in El Salvador alongside more than 250 other deportees.
In a two-count grand jury indictment, filed in a Tennessee court last month and unsealed on Friday, Mr Ábrego García was charged with one count of conspiracy to transport aliens and a second count of unlawful transportation of undocumented aliens.
