USCIS registration mandate: noncitizens must carry proof of registration (valid status) at all times, especially for domestic travel

Due to ICE’s new practice of detaining certain noncitizens traveling on domestic flights, we wish to remind all noncitizens of the USCIS registration mandate. As of April 2025, all foreign nationals (including Permanent Residents) fourteen years old and older must register with USCIS and carry proof of their registration at all times. This is now particularly important for domestic flights, as individuals might encounter ICE not only at security but also at the gate.

Most foreign nationals with valid immigration status were already registered as part of their visa and I-94 issuance process. The most common proof of registration includes I-94s (either printed from the CBP website or at the bottom of an I-797 Approval Notice), green cards, and EADs.