The President has the power either to sign legislation into law or to veto bills enacted by Congress, although Congress may override a veto with a two-thirds vote of both houses.
The Executive Branch conducts diplomacy with other nations, and the President has the power to negotiate and sign treaties, which also must be ratified by two-thirds of the Senate.
The President can issue executive orders, which direct executive officers or clarify and further existing laws. The President also has unlimited power to extend pardons and clemencies for federal crimes, except in cases of impeachment.
With these powers come several responsibilities, among them a constitutional requirement to "from time to time give to the Congress Information of the State of the Union, and recommend to their Consideration such Measures as he shall judge necessary and expedient."
Although the President may fulfill this requirement in any way he or she chooses, Presidents have traditionally given a State of the Union address to a joint session of Congress each January (except in inaugural years) outlining their agenda for the coming year.