The president vetoes a bill although there are many supporters. this is an example of "power".
The President of the United States has uncommon control over the molding of government laws. He or she can veto any law gone by Congress. Simply the risk of a veto is sufficient to inspire Congress to change components of a bill that a President doesn't care for.
The power of the President to decline to endorse a bill or joint determination and in this manner keep its sanctioning into law is the veto. The President has ten days (barring Sundays) to sign a bill passed by Congress.