Consular nonreviewability (sometimes written as consular non-reviewability, and also called consular absolutism) refers to the doctrine in immigration law in the United States where the visa decisions made by United States consular officers (who work for the United States Department of State) cannot be appealed in the United States judicial system. It is closely related to the plenary power doctrine that immunizes from judicial review the substantive immigration decisions of the United States Congress and the executive branch of the United States government.