To get a reentry permit, file Form I-131 with USCIS at least 60 days before traveling, along with your green card, passport, and supporting documents. The USCIS Miami Field Office serves Miami-Dade County.It handles interviews for non-asylum immigration applications and naturalization for new US citizens. To obtain a green card, the first step is to confirm you are eligible. Fill out your form(s) online and print it. All required supporting documents for the form(s). If a customer is unsure of the required documentation, they should bring all United States Citizenship and Immigration Services (USCIS) documentation with them.