President of the United States

The President was the political leader of the United States of America.

For most of America's history, the President was based in the White House.

19th century

 * Thomas Jefferson - The Doctor assisted him in drafting the Declaration of Independence, decades before Jefferson became president (DW: The Lazarus Experiment - deleted scene)
 * Abraham Lincoln (DW: The Chase)

1920s and 1930s

 * Herbert Hoover (DW: Daleks in Manhattan)

1960s

 * John F. Kennedy (DW: Silver Nemesis, MA: Who Killed Kennedy, DW: Rose)

1990s

 * Carroll (DWM: Rennigan's Record)
 * Tom Dering (EDA: Option Lock, PDA: ''Millennium Shock)

2000s

 * Springsteen (NA: Eternity Weeps)
 * Norris (NA: Cat's Cradle: Warhead)
 * George W. Bush (WC: Death Comes to Time)
 * Arthur Coleman Winters (DW: The Sound of Drums) - referred to as "President Elect"; killed by the Toclafane in May of 2008.
 * Felix Mather (EDA: Trading Futures)
 * Schwarzenegger (DW: Bad Wolf)
 * An unnamed President affected by Martin Trueman's hypnosis (SJA: Secrets of the Stars)
 * Barack Obama (DWM: Ghosts of the Northern Line)

2010s

 * Barack Obama (DW: The End of Time)
 * The Master - briefly, when along with everyone else Barack Obama was converted into a copy of the Master. (DW: The End of Time)

18th century

 * Benjamin Franklin (BFA: Seasons of Fear, BFA: Neverland)