Today in history 2002: Vice President Dick Cheney serves as Acting President for two and a half hours

On this day, June 29th, in 2002, Vice President Dick Cheney served as president for a total of two and a half hours, while President Bush underwent a routine colonoscopy at the Camp David presidential retreat.

According to the National Journal, the 25th Amendment grants the vice president and Cabinet members the power to declare a president disabled, transferring presidential responsibilities to the vice president. It also allows the president to declare himself temporarily unable to perform his duties.

During Cheney's brief stint as POTUS, he performed one bit of official work: he penned a letter to his grandchildren, as 'a souvenir for them to have down the road someday,' Mr. Cheney said to CBS radio.

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