Christopher Almaguer, 26, and his wife, 27-year-old Sarah Rashelle Almaguer, pleaded guilty in October to one charge of sexual exploitation of children and one count of production of child pornography.
The mandatory minimum sentence on each count is 15 to 30 years.
"To me this is the most significant case we've prosecuted since I became US Attorney," said John Bash, the United States Attorney for the Western District of Texas.
The Justice Department had said the Almaguers admitted to uploading in December 2017 videos of the couple sexually assaulting children. Prosecutors believe there are at least 25 possible victims, ranging in age from 8 months to 14 years old.
Sarah Almaguer's attorney, Bradford J. Glendening, said he is asking the judge to give his client concurrent sentences.
Robert Stem, attorney for Christopher Almaguer, wrote in an email that he had no comment on the case.