H Temporary Workers in a Specialty Occupation
The H visa category is designed for professionals or trainees who want to temporarily work or train within a US company.
H-1B
Your employer or agent may file a petition to classify you as an H-1B temporary worker if you work in a specialty occupation, engage in cooperative research and development projects administered by the U.S. Department of Defense, or are a fashion model of distinguished merit and ability.
H-2
The H-2 category allows temporary agricultural (H-2A) and non-agricultural (H-2B) visas for U.S. employers or U.S. agents who meet specific regulatory requirements to bring foreign nationals to the United States.
H-3
The H-3 category allows for foreign nationals coming temporarily to the United States to either (1) receive training in any field of endeavor, other than graduate medical education or training, that is not available in the foreign nationals home country or (2) to participate in a special education exchange visitor training program that provides for practical training and experience in the education of children with physical, mental, or emotional disabilities. The H-3 classification is not intended for U.S. employment. Instead, it is designed to provide a foreign national with job-related training for work that will ultimately be performed outside the United States.