According to the North American Free Trade Agreement, Mexican professional workers may come to the U.S. with non-immigrant status. Specifically, the TN NAFTA visa allows workers from Canada and Mexico to come to the U.S. if they meet certain qualifications.
Are You an Executive or Manager and Want to Transfer to a U.S. Office? You Need to Know About L-1A Classification
L-1A is a status used for Intracompany Transferees and Executive Managers. With this non-immigrant status, an employer from a foreign company can send an executive employee to the U.S. to work at an affiliate or sister organization or office. Or, if there is no office established in the U.S. yet, the executive or manager can be sent to the U.S. to set up the office.