Acting president or coordinating vice president

In the United States, the role of the Acting President or Coordinating Vice President is a temporary and ceremonial position that is filled when the President is unable to perform their duties. Here's a brief overview:

Acting President:

Coordinating Vice President:

In summary, the Acting President is the highest-ranking official in the executive branch who assumes the duties and powers of the President when the President is unable to perform their duties, while the Coordinating Vice President is a role that coordinates the activities of the Vice President and other officials in the executive branch during a presidential vacancy.