In August, Marquez was among 22 people sanctioned by the department's Office of Foreign Assets Control. He was accused of acting as a frontman for the Raul Flores Hernandez drug trafficking organization.
Marquez has denied any wrongdoing and said he will work to clear his name. He is not known to face any criminal charges in the United States or Mexico. Atlas says Marquez will continue his legal fight while at the team.
Marquez has played internationally with AS Monaco, Barcelona and the New York Red Bulls.