Can Chinese migrant workers apply for a work visa when they go to the United States to work?

Yes, and it is necessary. If you don't apply for a work visa, you are working illegally, and those who work illegally will be deported. Generally, people who want to work in the United States for a short period of time apply for H1B visa. When the visa time is coming, you can go to the consulate to renew it.

The definition of "professional work" in U.S. immigration law is: this work requires the application of professional theoretical knowledge, and applicants are required to have at least a bachelor's degree. Only jobs that meet one of the following conditions are "professional jobs."

1. A bachelor's degree or higher, or a foreign degree equivalent to the U.S. equivalent, is the minimum standard for this job.

2. Educational requirements are the most normal requirements for the same position in companies with the same nature of work in the same industry. Alternatively, the employer may provide documentation that, because the work performed in the position is so complex that only individuals with academic qualifications can perform it.

3. Employers usually require people with academic qualifications to take on the job.

4. The responsibilities of a certain job are very specialized and complex, and the knowledge required to perform the job is usually associated with a bachelor's degree or higher.

The above conditions are the criteria used by the Immigration Bureau to determine whether a certain job is a "professional job". In addition, the Immigration Service pointed out that the specific job responsibilities and the nature of the employer's business are also criteria to determine whether a position is a "professional job."