Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. Where you file your Form I485 depends on your eligibility category.Review the information below to see where you should file your application. Complete Form I-485 and gather supporting documents. Form I-485 is your application to adjust your status to permanent resident. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. Explore lawful permanent residency opportunities to ease immigration in Chicago for new arrivals and prospective Chicago immigrants alike. Form I-485, Application to Register Permanent Residence or Adjust Status. Read on to learn from a Chicago immigration attorney about how to petition a family member for lawful immigration to the US (aka Green Card status). This page is a resource for spouses, partners, and family members of international students, scholars and employees.