A man from the San Francisco Bay area has fathered 14 children in the past five years through free sperm donations to childless couples he meets on the Internet—and he is now in trouble with the federal government.

Trent Arsenault of Fremont says he donates his sperm, which he touts as “organic,” out of a sense of service to help people who want to have children but can’t afford conventional sperm banks. The 36-year-old minister’s son has four more children on the way.

“I always had known through people praying at church that there’s fertility issues,” Arsenault told the Associated Press. “I thought it would just be a neat way of service to help the community.”

The U.S. Food and Drug Administration seems to have other ideas and has sent Arsenault a cease-and-desist letter telling him he must stop because he does not follow the agency’s requirements for getting tested for sexually transmitted diseases within seven days before giving sperm. The FDA did not immediately respond to questions about what kind of punishment he faces.

Arsenault gets tested regularly, but following the FDA’s rules would make it impossible to keep offering his sperm for free, he said.

Arsenault says the FDA tracked him down from his website, which advertises his availability as a sperm donor. In its letter, the agency describes Arsenault’s service as a business. Arsenault disagrees.

“This is not a business or a clinic. It’s just people partnering up to have a baby out of compassion,” he said.