A U.S. visa, issued by a U.S. consulate or embassy, that allows its holder to come to the United States temporarily and for a limited purpose. Each nonimmigrant visa comes with a different set of privileges, such as the right to work or study. In addition to a descriptive name, a letter of the alphabet and a number identifies each type of nonimmigrant visa. Student visas, for example, are F-1 or M-1, and investor visas are E-2. Nonimmigrant visas also vary according to how long they permit the holder to stay in the United States. For example, someone on a work visa can remain for many years, but someone on a visitor's visa can stay for only six months at a time.