A visa in the United States refers to a professional/temporary work visa for special professionals.
Professional/Temporary Worker Visa (H- 1B).H 1B visa is the most important type of work visa in the United States, which is issued to employees with foreign professional skills employed by American companies, and their majors and degrees must be related, and they are non-immigrant visas. H 1B visa holders can work in the United States for three years, which can be extended for another three years. After the expiration of six years, visa holders must leave the United States if their status has not changed.