What does a visa allow an alien to do?

A visa serves as an official document that permits an alien to request entry into the United States. It indicates that a consular officer has reviewed the application and deemed the individual eligible for entry based on the terms of the visa category. However, possessing a visa does not guarantee entry, as the final decision is made by a Customs and Border Protection (CBP) officer at the port of entry.

The other options misrepresent the function of a visa. For example, while a visa is essential for entry, it does not ensure automatic admission into the country. Additionally, a visa does not confer citizenship or serve as documentation for permanent residency; instead, those are separate legal statuses with different processes and criteria. This understanding is crucial for navigating the complexities of U.S. immigration law effectively.