The term "budget item veto" refers to the authority of a executive branch to remove individual items from a budget before signing it into law. Synonyms for this power include line item veto, fiscal veto, and appropriations veto. This authority is often seen as a way for the executive branch to exercise greater control over the budget process, and has been used by various presidents and governors throughout history. However, the constitutionality of the budget item veto is controversial, with some arguing that it goes against the separation of powers outlined in the Constitution. Despite this controversy, the power remains in use today at both the federal and state levels of government.