Essential support alien
Essential support alien means a highly skilled, essential person determined by the Director to be an integral part of the performance of a P-1, P-2, or P-3 alien because he or she performs support services which cannot be readily performed by a United States worker and which are essential to the successful performance of services by the P-1, P-2, alien. Such alien must have appropriate qualifications to perform the services, critical knowledge of the specific services to be performed, and experience in providing such support to the P-1, P-2, or P-3 alien.