The U.S. immigration system requires everyone to have permission to enter and stay in the United States.  U.S. citizens and legal permanent residents (green card holders) have permission to remain in the U.S. on a long-term basis, while others must seek specific permission.  Whether one is coming to the U.S. for a short-term visit for leisure or business, for education, or for working, one must first obtain permission from the government.  Such permission is granted in the form of a visa.  The appropriate visa classification for you or your employee will depend on the purpose of the stay in the United States.  Allow us to assess your needs and provide you with counsel on the most appropriate visa option.