请看:http://travel.state.gov/visa/temp/info/info_1299.html , students with expired visas (F, J, H, E, A, B, C, I, L visas) may travel to Canada, Mexico or “adjacent islands” : Saint Pierre, Miquelon, Cuba,The Dominican Republic, Haiti, Bermuda, The Bahamas, Barbados, Jamaica, The Windward and Leeward Islands, Trinidad ,Martinique, Other British, French, and Netherlands territory or possessions in or bordering on the Caribbean Sea ) and return to the United States without acquiring a new visa if you return within 30 days or less.
students with expired visas (F, J, H, E, A, B, C, I, L visas) may travel to Canada, Mexico or
“adjacent islands” : Saint Pierre, Miquelon, Cuba,The Dominican Republic, Haiti, Bermuda, The Bahamas, Barbados, Jamaica, The Windward and Leeward Islands, Trinidad ,Martinique, Other British, French, and Netherlands territory or possessions in or bordering on the Caribbean Sea ) and return to the United States without acquiring a new visa if you return within 30 days or less.