Repeat smuggler sent to federal prison after illegal aliens found concealed inside tractor

CORPUS CHRISTI, Texas - A 53-year-old San Juan resident has been sentenced for transporting six illegal aliens, announced Acting U.S. Attorney John G.E. Marck.

Mario Trevino pleaded guilty Dec. 29, 2025.

U.S. District Judge David S. Morales has now ordered Trevino to serve 33 months in federal prison to be immediately followed by three years of supervised release. At the hearing, the court heard additional evidence detailing how the illegal aliens were transported in a confined space and that at least one expressed concern for their safety. The court also heard about Trevino's prior attempts to evade law enforcement. In handing down the sentence, the court noted his criminal history, which included possession with intent to distribute meth, evading arrest and a prior conviction for smuggling illegal aliens.

On Oct. 28, 2025, Trevino drove a tractor trailer to the Border Patrol checkpoint near Sarita. He claimed the trailer was empty, and he was heading to pick up a load.

Law enforcement conducted a search of the vehicle where they observed six illegal aliens concealed in the sleeper area. Some were hidden underneath a blanket, while others hid in a cabinet.

The illegal aliens reported they had illegally entered the United States and were transported through multiple locations in the Rio Grande Valley before being directed to enter the tractor-trailer. They further stated Trevino instructed them to remain hidden and not move.

Trevino has been and will remain in custody pending transfer to a Federal Bureau of Prisons facility to be determined in the near future.

Border Patrol conducted the investigation. Assistant U.S. Attorney Izaak Bruce prosecuted the case.

This case is part of Operation Take Back America, a nationwide initiative that marshals the full resources of the Department of Justice to repel the invasion of illegal immigration, achieve the total elimination of cartels and transnational criminal organizations, and protect our communities from the perpetrators of violent crime.