Former Marine sentenced to 60 years for sexual exploitation of minor

HOUSTON – A 25-year-old Houston resident has been ordered to federal prison after his multiple convictions involving child sexual abuse material (CSAM), announced U.S. Attorney Nicholas J. Ganjei.

Derrick Alexander Barnum pleaded guilty April 11 to possession, distribution and production of child pornography.

U.S. District Judge Ewing Werlein Jr. has now sentenced Barnum to a total of 720 months in federal prison. He received 360 and 240 months for the production and distribution convictions, respectively, as well as another 120 months for the possession of CSAM. They will all run consecutively for a total of 60 years in federal prison.  

At the hearing, the court heard additional information regarding the victim, who was only three at the time the exploitation began. The victim’s mother prepared and read from a victim impact statement which described how the minor victim needed counseling for the trauma Barnum caused and will live with his actions for the rest of their life. In handing down the prison terms, the court noted this case presents some of the worst, most horrible facts the court has ever seen and that the scars inflicted upon the young child are scars that last for a lifetime.

The court will determine and order restitution at a later date. Barnum will serve the rest of his life on supervised release following the completion of his prison term. During that time, he will have to comply with numerous requirements designed to restrict his access to children and the internet. Barnum will also be ordered to register as a sex offender.

“The defendant robbed this child of their innocence, not only by committing a pattern of vicious sexual assault, but also by publicizing videos of this abuse for the world to see,” said Ganjei. “While the sentence of 60 years will likely mean Barnum spends the rest of his natural life in prison, it still falls short of healing the scars he sadistically inflicted on the minor victim. A similar sentence awaits anyone who dares commit a comparable act.” 

“Derrick Barnum didn’t just commit a crime; he broadcast the torture of a child for the gratification of other abusers,” said FBI Houston Special Agent in Charge Douglas Williams. “This case is a brutal reminder of the hidden world we are fighting, where predators treat the sexual abuse of children as entertainment. FBI Houston agents and analysts pierced the veil of online anonymity and made sure Barnum faced justice. No one who commits crimes against children should believe they are beyond our reach.”

The investigation began in July 2024 when authorities discovered Barnum’s posts in a CSAM trading room on an internet-based application. He posted multiple videos of himself with the victim and sought other users that engaged in similar conduct.

Authorities conducted a search of Barnum’s residence and seized his electronic devices. A forensic examination revealed he had nearly 1000 images and 259 videos on his phone. All depicted minor victims engaged in sexually explicit conduct, including oral, anal and vaginal penetration, masturbation, sadistic and masochistic conduct and lewd and lascivious exhibition of genitals.

Approximately 27 videos showed Barnum engaging in sexual activity with the victim. Barnum created and transmitted his videos showing the sexual exploitation of the victim to third parties on a social media platform.

He also received a video from another adult male engaging in oral sex with a minor child.

The FBI Child Exploitation and Human Trafficking Task Force conducted the investigation.

Assistant U.S. Attorney Anthony Franklyn prosecuted the case which was brought as part of Project Safe Childhood (PSC), a nationwide initiative the Department of Justice (DOJ) launched in May 2006 to combat the growing epidemic of child sexual exploitation and abuse. U.S. Attorneys' Offices and the Criminal Division's Child Exploitation and Obscenity Section leads PSC, which marshals federal, state and local resources to locate, apprehend and prosecute individuals who sexually exploit children and identifies and rescues victims. For more information about PSC, please visit DOJ’s PSC page. For more information about internet safety education, please visit the resources tab on that page.