[slg]

Once again, it is highly suggested you use an ID, but it isn't 100% required.

From TSA's website[1]:

>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.

[1] - https://www.tsa.gov/travel/security-screening/identification

[neonIcon]

Ah yes, get to the airport 5 hours early everytime you want to fly so you can go through that process buddy. That's a huge barrier to entry, one that is clearly not taken advantage of very often because the vast majority of Americans have an ID..