The Presidents' Gatekeepers

Part 1 of 2. Presidential chiefs of staff are often the only other people in the room during the most pivotal moments in US history. From Barack Obama to Lyndon Johnson, chiefs of staff shed light on the toughest job in Washington.

Part 2 of 2: Presidential chiefs of staff are often the only other people in the room during the most pivotal moments in US history. From Barack Obama to Lyndon Johnson, chiefs of staff shed light on the toughest job in Washington.

Part 1 of 2: The chiefs of staff must be ready for anything: from containing scandals to managing first ladies to weighing the risks of trying to kill Osama Bin Laden.

Part 2 of 2: The chiefs of staff must be ready for anything: from containing scandals to managing first ladies to weighing the risks of trying to kill Osama Bin Laden.