a person (e.g. a visitor, a foreign student, an H1B worker, etc.) who is in the U.S. on a temporary basis. Many categories, such as visitor and student ( not H1B), require one to show s/he has nonimmigrant intent. Under the law, one is presumed to be an immigrant unless s/he proves otherwise. It is this rule that makes it difficult to obtain tourist and student visas at consulates.