Dallas man sentenced to lengthy federal prison sentence under Homeland Security Task Force for trafficking fentanyl in the Eastern District of Texas

SHERMAN, Texas -A Dallas man has been sentenced to over 12 years in federal prison under the Homeland Security Task Force for trafficking fentanyl in the Eastern District of Texas, announced U.S. Attorney Jay R. Combs.

Marvin Alexander Portillo, 29, pleaded guilty to conspiracy to possess with intent to distribute fentanyl and was sentenced to 151 months in federal prison by U.S. District Judge Amos L. Mazzant, III on March 31, 2026.

According to information presented in court, in June of 2023, Portillo was identified during a drug trafficking investigation involving the distribution of fentanyl-laced pills in the Eastern District of Texas. Portillo admitted to being involved in a conspiracy responsible for distributing at least 400 grams of a substance containing fentanyl in the Eastern District of Texas.

This case is part of the Homeland Security Task Force (HSTF) initiative established by Executive Order 14159, Protecting the American People Against Invasion. The HSTF is a whole-of-government partnership dedicated to eliminating criminal cartels, foreign gangs, transnational criminal organizations, and human smuggling and trafficking rings operating in the United States and abroad. Through historic interagency collaboration, the HSTF directs the full might of United States law enforcement towards identifying, investigating, and prosecuting the full spectrum of crimes committed by these organizations, which have long fueled violence and instability within our borders. In performing this work, the HSTF places special emphasis on investigating and prosecuting those engaged in child trafficking or other crimes involving children. The HSTF further utilizes all available tools to prosecute and remove the most violent criminal aliens from the United States.

This case was investigated by the Drug Enforcement Administration and prosecuted by Assistant U.S. Attorney Matthew T. Johnson.

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