Rubio demands USA Boxing reverse course on trans policy: 'Allowing men to hit women is reprehensible'

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Sen. Marco Rubio, R-Fla., urged USA Boxing in a letter obtained by Fox News Digital on Friday to reverse its decision to allow transgender female athletes to compete against women in the ring.

USA Boxing says a fighter who transitioned from male to female can compete in the female category under several conditions spelled out in the rule book: "The boxer identifies as a female and has completed gender reassignment surgery. The fighter has undergone quarterly hormone testing and gives the organization documentation of hormone levels for a minimum of four years. The fighter’s testosterone levels have been below 5 nanomoles per liter 48 months before their first fight, the fighter’s total testosterone level must remain below 5 nmol/L through their eligibility to compete against females and the conditions will be monitored and tested at the fighter’s expense with a 12-month suspension for failing to meet the standards."

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Sen. Marco Rubio, R-Fla., is urging USA Boxing to reverse its decision to allow transgender female athletes to compete against women in the ring. (Bill Clark/CQ-Roll Call Inc. via Getty Images)

Rubio urged USA Boxing Executive Director and CEO Mike McAtee to reverse the decision, saying the policy "denies the scientific reality of sex, endangers women, upends fairness in athletics, and diminishes womanhood by pretending it is only a matter of surgery and hormone levels."

"Moreover, your policy encourages athletes suffering from gender dysphoria to castrate themselves in order to compete. I write to urge you to reverse this dangerous decision," the letter reads.

Rubio