The U.S. Treasury sanctioned six leaders and affiliates of the Venezuelan gang Tren de Aragua, including the head of the group, known by the alias "Niño Guerrero."

The group has been linked to human trafficking networks that move migrants north through Central America and Mexico, with stops in border cities like Tapachula and Tijuana - and eventual arrivals in U.

The Trump administration has sanctioned members of Venezuelan gang Tren de Aragua in a move to crack down on the foreign terrorist organization.