The Family Preference Green Card program is a component of U.S. immigration policy that allows U.S. citizens and lawful permanent residents (LPRs) to sponsor certain family members for permanent residency (Green Cards). This program is divided into four main categories, each with its eligibility criteria and annual limits on the number of Green Cards that can be issued. Understanding these categories is crucial for reuniting families in the United States. Here's an overview of each category:

• F1 Category (Unmarried Sons and Daughters of U.S. Citizens): This category is for unmarried sons and daughters of U.S. citizens who are 21 years of age or older. it also includes their minor children (if any). The critical requirement is that the son or daughter remain unmarried throughout the application process. Getting married would change their eligibility category.
• F2 Category (Spouses, Minor Children, and Unmarried Sons and Daughters of U.S. Permanent Residents): This category is further divided into two subcategories:
  • • F2A: Spouses and minor children (under 21) of LPRs.
    • F2B: Unmarried sons and daughters of LPRs who are 21 or older.
  • In the F2 category, a higher priority is given to spouses and minor children (F2A) over adult sons and daughters (F2B).
• F3 Category (Married Sons and Daughters of U.S. Citizens): This category applies to U.S. citizens' married sons and daughters. It includes the spouses and minor children of these sons and daughters. The U.S. citizen parent must file the petition, and the marriage status of the son or daughter must be maintained throughout the process.
• F4 Category (Siblings of U.S. Citizens): This category is for siblings of U.S. citizens, where the U.S. citizen is at least 21 years old. It includes the spouses and minor children of these siblings. The U.S. citizen must file the petition on behalf of their sibling.