Special Considerations Document Inconsistencies: If travelers’ passports contains a sex designation that differs from their current identification, airlines must still transmit the information exactly as it appears on their passport documents. CBP systems will only accept the “M” or “F” designation that matches travel documents. Non-Binary Passport Designations: Passports issued with “X” or other non-binary markers will be rejected by CBP systems, requiring resubmission with valid documentation showing “M” or “F” designation. Passport Updates: Travelers experiencing documentation inconsistencies may wish to consult with the relevant passport issuing authority about available options for updating travel documents.

Special Considerations Document Inconsistencies: If travelers’ passports contains a sex designation that differs from their current identification, airlines must still transmit the information exactly as it appears on their passport documents. CBP systems will only accept the “M” or “F” designation that matches travel documents. Non-Binary Passport Designations: Passports issued with “X” or other non-binary markers will be rejected by CBP systems, requiring resubmission with valid documentation showing “M” or “F” designation. Passport Updates: Travelers experiencing documentation inconsistencies may wish to consult with the relevant passport issuing authority about available options for updating travel documents.