The United States
Department of State, commonly referred to as "DOS" is a
department of the federal government.
The Immigration and Nationality
Act, regulates the admission of aliens into the United States. The Act
designates the Attorney General (Department of Homeland Security) and the Secretary
of State (Department of State) as the principal administrators of its
provisions.
The consular offices of the United
States Department of State throughout the world are generally the initial
contact for aliens in foreign countries who desire to enter the United
States as nonimmigrants or immigrants. These consular offices process
visas, and upon properly obtained eligibility documentation, issue
appropriate nonimmigrant or immigrant visas.