From the TSA website:
Acceptable IDs include:
- U.S. passport
- U.S. passport card
- 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)
- Non-US/Canadian citizens are not required to carry their passports if they have documents issued by the U.S. government such as Permanent Resident Cards. Those who do not should be carrying their passports while visiting the U.S.
A Federal Employee ID is not listed.