If you have a valid passport that would work or any of the IDs below:

DHS "Trusted Traveler" cards (Global Entry, NEXUS, SENTRI, FAST)
U.S. Military ID (active duty or retired military and their dependents, and DOD civilians)
Permanent Resident Card
Border Crossing Card
DHS-designated enhanced driver's license Drivers Licenses or other state photo identity cards issued by Department of Motor Vehicles (or equivalent)
Native American Tribal Photo ID
An airline or airport-issued ID (if issued under a TSA-approved security plan)
A foreign government-issued passport
Canadian provincial driver's license or Indian and Northern Affairs Canada (INAC) card
Transportation Worker Identification Credential (TWIC)