To obtain permission to leave the U.S. and travel before your green card application gets approved, you'll need to fill out Form I-131. Here's how to do it.This form may only be used to apply to U.S. Citizenship and. Permanent residents use Form I-131A to obtain travel authorization after losing a green card or reentry permit while traveling outside the United States. All applicants for a Refugee Travel Document or a Reentry Permit must complete biometrics at a USCIS. What Is the Purpose of This Form? This form is for applying to U.S. Citizenship and Immigration Services (USCIS) for the following travel documents:. You should contact ICE about your request. 1. If you are in the United States as a lawful permanent resident or conditional permanent resident, you may apply for a Reentry Permit. It is appropriate to file Form I-131A if you are a lawful permanent resident or conditional resident and returning from temporary overseas travel of less than:.