<P> The phrase presidential veto does not appear in the United States Constitution, but Article I requires every bill, order, resolution or other act of legislation by the Congress of the United States to be presented to the President of the United States for their approval . When the President is presented the bill, they can either sign it into law, return the bill to the originating house of Congress with their objections to the bill (a veto), or neither sign nor return it to Congress after having been presented the bill for ten days exempting Sundays (if Congress is still in session, the bill becomes a law; otherwise, the bill does not become a law and is considered a pocket veto). The list below contains many of the bills vetoed and pocket vetoed by Presidents . </P> <P> Although each case is unique and involves a plethora of influences, one general rule can be acknowledged: Presidents use their prerogative to veto legislation when such legislation does not represent their viewpoint or agenda . </P>

How long does the president have to sign legislation