The amendment that explains what should happen if the president becomes disabled is the 25th Amendment to the United States Constitution. It addresses presidential disability by providing procedures for transferring power to the vice president when the president is unable to perform the duties of the office, either temporarily or permanently. This amendment outlines the process for the vice president to become acting president and the mechanisms for the president to regain power once recovered. It also includes provisions for filling a vice presidential vacancy and clarifies succession issues related to presidential incapacity.