Upvote:1
The only thing you need to fill out is a customs form. Also, be sure to present your passport in addition to the green card at the immigration checkpoint.
If seeking to enter the United States after temporary travel abroad, you will need to present a valid, unexpired βgreen cardβ (Form I-551, Permanent Resident Card). When arriving at a port of entry, a U.S. Customs and Border Protection Officer will review your permanent resident card and any other identity documents you present, such as a passport, foreign national I.D. card or U.S. Driverβs License, and determine if you can enter the United States. (Link)