The constitution states the bill vetoed The power of the President to refuse to approve a bill or joint resolution and thus prevent its enactment into law is the veto. The president has ten days excluding Sunday’s to sign a bill passed by Congress. A regular veto occurs when the President returns the legislation to the house in which it originated, usually with a message explaining the rationale for the veto. This veto can be overridden only by a two-thirds vote in both the Senate and the House
