The Green Card through the marriage application process can be divided into two main stages: the immigrant petition stage and the adjustment of the status stage. During the immigrant petition stage, the U.S. citizen or LPR spouse files a petition on behalf of their foreign spouse with U.S. Citizenship and Immigration Services (USCIS). If the authorities approve the petition, the foreign spouse can then initiate the green card application through the adjustment of status process. This process requires them to submit various forms, provide supporting documents, and attend an interview.