Allies and friends,

Today, the U.S. Supreme Court will hear arguments in a monumental case challenging the constitutionality of state laws that protect kids from harmful transgender interventions. Read about the case, read our brief to the court, and check out more of the latest below.

The Biological Integrity Team
The American College of Pediatricians

U.S. Senator Introduces Bill to Define Sex as Biological

Senator Roger Marshall of Kansas introduced legislation to codify a biological definition of male and female that would protect girls’ sports, scholarships, and spaces. “We must codify the legal definition of sex to be based on science rather than feelings,” said Marshall in a news release.

Read more about the legislation. 

TODAY: The Supreme Court Hears Oral Argument in US v. Skrmetti

Today, SCOTUS is hearing oral arguments in a case challenging a Tennessee law protecting minors from transgender interventions. ACPeds submitted an amicus brief in support of protecting children from puberty blockers, cross-sex hormones, and transgender surgeries.

What to know about the Skrmetti Case.

Register for MBEC 2025 Conference to Hear from Dr. Miriam Grossman

Dr. Miriam Grossman, author of Lost in Transnation, is giving a keynote address at the 2025 annual MBEC Conference hosted by the American College of Pediatricians and the American Association of Pro-Life Obstetricians and Gynecologists.

Learn more and register.