If you are 18 or older, you do have to carry your Green Card with you. Section 264(e) of the Immigration and Nationality Act (I.N.A.) requires all lawful permanent residents (LPRs) to have “at all times” official evidence of LPR status.
Failing to have your Green Card with you is a misdemeanor and if you are found guilty you can be fined up to $100 and put in jail for up to 30 days. (I.N.A. Section 264(e).)
