The United States Immigration system and laws are somewhat difficult to understand if you are a layman. It is based on the law governing body i.e. INA (Immigration and Naturalization Act) of current immigration policies. It determines a worldwide annual limit for permanent immigrants to 6, 75000, with exceptions for close family members. Features of US Immigration Policy: Allowing the immigrants with skill and experience that is worthy to the US Economy and development. The reunification of families. Protection of Refugees The separate number for Refugee admissions are being given by both President and the congress. Promotion of Diversity. Let’s understand now as to how the US Immigration System is designed.A. Family-Based Immigration B. Employment-Based Immigration C. Permanent Immigration D. Per country ceilings E. Refugees and Asylees F. The Diversity Visa Program G. U.S. Citizenship