If the President can no longer serve, who becomes President?

The Vice President becomes President if the current President can no longer serve. This transition is outlined in the Presidential Succession Act and the 25th Amendment to the U.S. Constitution. The Vice President is the first in the line of succession, ensuring continuity of leadership and government function.

In the event of a vacancy in the presidency due to reasons such as resignation, death, or removal, the Vice President stepping into the role secures the stability of the executive branch. Other roles, such as the Speaker of the House or Senate Majority Leader, are higher in the legislative branch hierarchy but do not have succession rights to the presidency unless it is also in the context of a complete and extraordinary situation where no other options are available. Similarly, the Secretary of State, while a key member of the President's Cabinet, is not in the line of succession as defined by law.