"Biological Sex at Birth" Is Doing a Lot of Unexamined Work Here

The legislation stakes everything on the phrase "biological sex at birth" — and nobody in the room is being asked to define it with any precision. That phrase sounds clinical and settled. It isn't. Intersex conditions alone affect an estimated 1.7% of the population. Chromosomal variation, hormone profiles, anatomical difference — "sex at birth" is a shorthand that collapses significant biological complexity into a binary checkbox on a birth certificate, a document filled out by a clerk, not a physiologist. Now that shorthand is the gatekeeper for federally funded athletic eligibility. Every program that takes federal money answers to it. I'm not arguing the underlying policy question either direction. What I'm arguing is that "biological sex at birth" is load-bearing language in a federal statute, and Congress has handed it zero definitional scaffolding. Who determines compliance? A coach? An administrator? A Title IX coordinator cross-referencing a birth certificate? Athletes — all of them — deserve legislation that can actually be administered without arbitrariness. Right now this language can't be. So here's the call: before the Senate moves this, which body or standard does this bill designate as the authoritative interpreter of "biological sex at birth"?