What is the H 1B work visa?

H 1B visa is defined as a temporary work visa issued by a person who works in the United States for a short time. H 1B aims to solve the problem of talents urgently needed by American companies but not available in China. Therefore, there are certain requirements for the applicant's academic qualifications, which must be a bachelor's degree or above. Holders of H 1B visas can work in the United States for up to 6 years by extending their visas in the United States. If the visa applicant fails to apply for a green card before the expiration of this status, the visa applicant must leave the United States for at least days before applying for an H 1B visa again. The new immigration regulations stipulate that foreign workers with H 1B status can change their employers before H 1B expires. The new employer can directly transfer your existing H 1B status from the original employer. Therefore, it is beneficial for holders of H 1B to find better opportunities. But the only reason why H 1B holders can stay in the United States is their work status. Once the holder of H 1B loses his job, according to the regulations, he must leave the United States the next day. However, the US immigration law also gives a gray period of 180 days, that is, any foreigner who legally enters the United States with a visa will not be investigated for illegal detention if his visa or identity expires and he leaves the country automatically within 180 days after the expiration.