Normally, visas are the starting point for foreign nationals for visiting, working or living in the United States. Visas are the official government approval for a citizen to stay in a foreign country. In the United States, U.S. citizens are eligible for an immigrant or nonimmigrant visa to enter, according to its objectives and its condition with respect to the US immigration rules. US Visa can be granted for tourism, employment, study or for people who ultimately seek to live and work in the United States for the rest of their lives. Choose a link from the list provided below for introductory information about visas and immigration law.