May of 1787, a group of America's early leaders met in Philadelphia. They planned to amend the Articles of Confederation which provided a loose union of the thirteen American states. ... That political document created America's system of government and recognized the rights of its citizens.
The legislative branch is the most powerful branch in government. They have the power to override a president's decision, stop laws from being passed, and basically control all decisions the governments makes
Their proposal specified the process by which a president could be declared "unable to discharge the powers and duties of his office", thereby making the vice president an acting president, and how the president could regain the powers of his office.