Is it an entrustment contract or a service contract to apply for an immigrant visa?

Entrustment contract. Entrustment contract, also known as entrustment contract, refers to a contract in which the principal and the trustee agree that the trustee will handle the principal's affairs. Handling the immigrant visa contract belongs to the entrustment contract. Immigrant visa is closely related to green card, and you can get a green card if you get an immigrant visa.