 Veto

A veto (Latin for "I forbid") is the power (used by an officer of the state, for example) to unilaterally stop an official action, especially the enactment of legislation.A veto can be absolute, as for instance in the United Nations Security Council, whose permanent members (China, France, Russia, the United Kingdom, and the United States) can block any resolution, or it can be limited, as in the legislative process of the United States, where a two-thirds vote in both the House and Senate will override a Presidential veto of legislation.