Visa is a national sovereign authorities in their own

Visa is a national sovereign authorities in their own or foreign citizens holding passports or other travel documents on the endorsement, stamped to indicate their access to their national borders or through the border procedures, it can be said to be issued to them A proof of endorsement. Generally speaking, a visa is a country's immigration authorities (such as immigration or its embassies and consulates abroad), foreign citizens to approve the entry of a document issued by the country.