Final answer:
The 25th Amendment allows the Vice President to assume the role of Acting President if the President is unable to perform their duties due to severe illness.
Step-by-step explanation:
The 25th Amendment of the United States Constitution provides guidelines for situations where the president is unable to fulfill their role due to severe illness. If a president is unable to perform their duties, they would notify the Speaker of the House and the President Pro Tempore of the Senate. The Vice President would then assume the role of Acting President until the President is able to resume their duties. This amendment ensures a smooth transition of power and continuity of government in such situations.
Learn more about The 25th Amendment and presidential succession