Here’s a great infographic on the debt.
I also recommend the Cumulative Debt in % of GDP chart for recent administrations. Bush beats Obama and Reagan, although I think Obama would probably be larger if one were to normalize for the length of his term. Clinton is a negative number as he was retiring debt — things would be so much better right now if GW hadn’t gone and squandered our money. And started a war of choice. And tortured people. (None of which excuses Obama’s Hooveristic tendency on the economy, the extension of the wars plus the start of a new one, the drone-murder of US citizens abroad, and the rather muted end of torture.)
Source: Econbrowser: Graphic of the Day: Who Borrowed? Who Loaned? via Coral Gables Watch, US Govt Borrowing–Guess Who Borrowed The Most??