You don't need your ID card in the US, but you still need to prove who you are. Without it they'll ask you questions and try and look you up somehow. https://

You don't need your ID card in the US, but you still need to prove who you are. Without it they'll ask you questions and try and look you up somehow. https://www.tsa.gov/travel/security-screening/identification https://www.tsa.gov/travel/security-screening/identification > In the event you arrive at the airport without valid identification, because it is lost or at home, you may still be allowed to fly. The TSA officer may ask you to complete an identity verification process which includes collecting information such as your name, current address, and other personal information to confirm your identity. If your identity is confirmed, you will be allowed to enter the screening checkpoint. You will be subject to additional screening, to include a patdown and screening of carry-on property.