A White House official said the administration recognizes the painful origins of the policy.
The U.S. Supreme Court declined to review a lower court's decision that the state employees' health plan can indeed be sued over anti-transgender discrimination.
"He was responsible for us confronting the issue of chemsex and was a true superhero of the LGBTQ community."
At least seven states are considering anti-transgender bills after a record year for such legislation.
The California state bill didn't have enough support to pass its first policy committee.
The research was conducted by the Trevor Project and published in the peer-reviewed Journal of Adolescent Health.
Two trans Iowans had sued over the state's exclusion of such procedures.