Overview
- CBP’s APIS system stopped accepting the “X” option on Oct. 14 after a 90‑day transition that began with a July notice to airlines.
- Carriers must enter either “M” or “F” even when a traveler’s passport displays an “X,” and CBP says airlines will not be penalized for the selection.
- The requirement applies to international flights to and from the United States and does not affect domestic travel reporting.
- Existing passports with an “X” remain valid under a U.S. District Court of Massachusetts order, and CBP says travel should not be blocked by the change.
- New or renewing passport and Trusted Traveler applicants are being required to choose male or female, with the White House stating renewals must reflect sex assigned at birth.