According to the Constitution of the United States, if the president is unable to carry out their duties due to being in a coma or any other reason, the Vice President would typically assume the role of acting president. In this scenario, Vice President Kamala Harris would serve as acting president while President Joe Biden is in a coma.
Upon the death of the president, the Vice President would then assume the presidency. Therefore, if President Biden were to die after being in a coma, Vice President Kamala Harris would become the President of the United States.
This succession of power is outlined in the 25th Amendment of the U.S. Constitution, which addresses presidential succession and disability. The 25th Amendment ensures a clear process for the Vice President to step in as acting president in cases where the president is unable to fulfill their duties, and ultimately to assume the presidency if the president is no longer able to serve.
