Question: is a green card a valid form of id

Answer: Yes, The federal government also issues a variety of other documents and cards which can be used to establish identity. Immigration and travel documents such as the Green Card or a visa can be used to prove identity and the right to work in the United States (if applicable). Trusted traveler cards are issued by US Customs and Border Protection to indicate participation in the NEXUS, SENTRI, or Global Entry programs used to facilitate expedited entry through customs. Within the marine trades (and supporting trades thereof), the Transportation Worker Identification Credential provides unescorted access to secured port facilitates.