With your foreign passport plus the green card, you will be allowed to enter Mexico by air, sea or land. ... It also allows you to re-enter the US after traveling to Mexico for a period of two years, without having to apply for a returning resident visa.

Can re-entry permit be denied?

A reentry permit can be denied for any of various reasons, including if you forget to include the appropriate documents or fee. One obvious reason for denial is if you have a reentry document already and it is still valid.

Can re-entry permit use as passport?

Yes. If you are a lawful permanent resident of the U.S. (Green Card holder) and cannot get a passport from your home country because it does not issue passports to permanent residents of other countries, you can apply with: your U.S. Refugee Travel Document (I-571), or. your Permit to Re-enter the United States (I-327) ...