Visa Requirement: Since 1924, non-citizens must possess a visa to enter the U.S., whether for a short visit or to live permanently.
Immigration Agencies: The U.S. Citizenship and Immigration Services (USCIS) is the agency overseeing immigration and naturalization, established under the Department of Homeland Security post 9/11.
Two Main Types of Visas:
Process of Applying for Visas:
Permanent Visas:
Temporary Visas: