On the other hand, said Hagar, the CPA is concerned about any bill that "basically prescribes any kind of treatment" or one that might lead "downstream" to someone legislating against another practice "they don't like."
"The difference here is that there is a very strong public policy argument that says why this practice ought to be limited," he said. "There is no evidence it does what it purports to be. It is, in essence, fraud ... and there is other evidence that it does harm. It concerns us greatly."
The CPA negotiated for months with legislators to hone language on the bill so that therapists could address "legitimate" talks on sexual orientation and gender identity issues, according to Hagar.
"We were wary of a form of the bill where they can't possibly engage in a discussion," said Hagar, who noted that the association supported the final version of the bill.
They also leaned on another precedent: Electroconvulsive shock therapy is highly regulated with judicial oversight.
"You can't give it to minors -- period," he said.
"I think the bill is clear and clean and did have a definition of supportive exploratory therapy that leads [minors with same-sex attractions] to be accepting and see themselves as a person of strength rather than a flawed person," he said.
ABC's Alice Gomstyn contributed to this report.