The Oregon Legislature is holding a public hearing Monday on a bill to ban conversion therapy for children.

Conversion therapy covers a range of treatments aimed at changing the sexual orientation of a person — from homosexual to heterosexual.

The therapy is based on the assumption that homosexuality can be altered.

But in 2001, the U.S. Surgeon General issued a report saying there’s no valid scientific evidence sexual orientation can be changed.

Oregon House Health Committee chair Rep. Mitch Greenlick wants to see the therapy banned for minors.

“Conversion therapy is a fraud, and when it’s applied to children it’s clearly child abuse,” he said.

Researchers in the 1950s, ‘60s and ‘70s developed therapies aimed at changing sexual orientation, using ideas pioneered by Sigmund Freud. Several religious organizations embraced the idea.