The policy targets 4,240 service members who may be distressed because their gender identity differs from their sex at birth.

The Supreme Court has allowed enforcement of the Trump administration's ban on transgender military service. The ruling was made after the administration sought emergency relief from the court. Litigation around the transgender troop ban continues in lower courts and may return to the Supreme Court.

NPR's Ailsa Chang speaks with Col. Bree Fram, an openly transgender member of the U.S. Space Force, about the Supreme Court upholding Trump's ban on transgender military service members.