There are many steps to the Green Card application process. First, a sponsor may petition for an individual to receive a Green Card. If the United States Citizenship and Immigration Services (USCIS) approves the petition, then a Green Card application follows. The individual who seeks a Green Card will have to have a medical examination. The petitioner will also have to provide an affidavit of support. The affidavit of support is a form in which the petitioner signs to acknowledge that they accept financial responsibility for the individual who seeks the Green Card. The purpose of the affidavit of support is to ensure that an individual who enters the United States will have a means of support other than government resources.