Why does the United States impose visa restrictions on China?

1) The main reason is that the applicant can't prove that he won't be a burden to the American public after entering the United States, or that he is looking for a job but can't get permission from the Labor Department.

2) the applicant's moral misconduct is also one of the reasons for refusing the visa, such as gambling, drug trafficking or drug abuse, advocating or advocating polygamy, etc.

3) mental illness, infectious diseases, mental illness, idiots, physical defects, disabilities and other people. Avoid unnecessary social burdens.

4) The United States looks down on China people in essence.

Visa refers to the procedure of endorsement and seal of passports or other travel documents held by domestic or foreign citizens by the sovereign organs of a country to show that they are allowed to enter, exit or transit. It can also be said that it is an endorsement certificate issued to them. Generally speaking, a visa is a document issued by a country's entry-exit administration (such as immigration bureau or its embassy or consulate abroad) to approve the entry of foreign citizens.