JACKSON, Miss. — Transgender youth in Mississippi were banned from receiving gender-affirming health care after Republican Gov. Tate Reeves signed legislation making certain treatments illegal on Tuesday.

Gender transition surgeries, hormone therapies, and puberty blockers are all banned for minors under House Bill 1125. The law comes amid a wave of anti-transgender legislation in largely red states.

As of last June, more than a dozen states had restricted access to gender-affirming care for youth or considered laws that would do so, according to the Kaiser Family Foundation. Similar bans are making their way through legislatures or have recently passed in Utah, South Dakota, and Tennessee.

Medical groups including the World Health Organization, the American Medical Association, the American Academy of Pediatrics, and the American Psychiatric Association all point to gender-affirming care as the only effective treatment for gender dysphoria, with which many transgender people are diagnosed.

Rob Hill, state director for Human Rights Campaign, has been tracking the Mississippi bill since the session began at the start of the year.

“My reaction to it initially was sadness because I know how this is going to impact families, trans kids in Mississippi who are already very vulnerable, but that turned as this bill was fast-tracked through the House and the Senate and now to the governor’s desk for his signature,” Hill said shortly before the signing ceremony began. “It’s anger now. I’m angry at the governor and lawmakers for making decisions they shouldn’t.”

Eighteen stories above him, the mood was very different. Local Republican Party officials chatted with the lawmakers who shepherded the bill through the two chambers across the street. They were soon joined by Reeves and Matt Walsh, who hosts a show for the conservative media outlet the Daily Wire.

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“This dangerous movement attempts to convince these children that they’re just a surgery away from happiness. It threatens our children’s innocence, and it threatens their health,” Reeves said.

Reeves, who said through this law Mississippi will “follow the science,” said rather than undergoing medical procedures, children should be told they are accepted and loved for who they are — meaning the biological sex listed on their birth certificates.