The President has the power to appoint which of the following positions?

The President has the authority to appoint Supreme Court Justices, which is a crucial part of the executive branch's role in the federal government. This power allows the President to influence the judicial branch by selecting individuals who will interpret the Constitution and the laws of the United States in the highest court. These appointments can have long-lasting effects on the law and governance of the country because Supreme Court Justices serve lifetime appointments, barring retirement or impeachment.

In contrast, Members of Congress are elected by the people through democratic processes and cannot be appointed. The Secretary of the Senate is an administrative position, typically appointed by the Senate itself, not the President. Lastly, the House Majority Whip is a party leadership position within the House of Representatives, elected by the majority party and not subject to presidential appointment. This distinction emphasizes the separation of powers entrenched in the U.S. Constitution, where each branch has its defined roles and responsibilities.