They are issued B-2 visas. Generally, immigration inspectors will allow tourists to remain in the United States for six months. Tourists cannot work in the United States. Visitors for business may not work, but may conduct short term business needs - as long as they are not being paid a salary by a U.S. employer. Students Tourists may enroll in school as part-time students, so long as the course will be completed within the permitted time to visit.
Some students enter to attend vocational education programs.
Foreign students are barred from entry into public elementary schools or publicly funded adult education programs. But they may attend public high schools for up to 12 months, if the student is able to pay the school for the full cost of the education. Generally, the school or program's advertising literature will indicate whether it is authorized to accept foreign students. Foreign students may work up to 20 hours per week on campus without the permission of immigration officials. Work authorization is given by the foreign student advisor.