Final answer:
Constitutional Amendments are not a power of the President, as that is a legislative process requiring Congress and state legislatures. President's powers include vetoing bills, acting as commander-in-chief, negotiating treaties, and making presidential appointments with Senate approval.
Step-by-step explanation:
The power that is not a power of the President is Constitutional Amendments. The President does have several enumerated powers as outlined in the Constitution, including the ability to veto legislation, act as commander-in-chief of the armed forces, negotiate treaties with the consent of the Senate, and make presidential appointments with Senate approval. However, initiating amendments to the Constitution is not within the President's powers; rather, it is a legislative power that requires the approval of two-thirds of both houses of Congress or a constitutional convention called for by two-thirds of the state legislatures, and subsequently, it must be ratified by three-fourths of the states.
Other Presidential powers include reprieves, pardons for offenses against the United States, and the duty to ensure that the laws are faithfully executed. Despite having a significant influence on the legislative process, such as proposing legislation and exercising veto power, the President cannot unilaterally enact Constitutional Amendments.