“The problem is, is that the way Bush has done it over the last eight years is to take out a credit card from the Bank of China in the name of our children, driving up our national debt from $5 trillion dollars for the first 42 presidents — number 43 added $4 trillion dollars by his lonesome, so that we now have over $9 trillion dollars of debt that we are going to have to pay back — $30,000 for every man, woman and child,” Obama said on July 3, 2008, at a campaign event in Fargo, N.D.
“That’s irresponsible. It’s unpatriotic,” said candidate Obama.
However, in less than three years in office, Obama has driven up the national debt by $4 trillion himself.
Your figures are a little off. Bush increased the debt from 5 trillion to 12 trillion from Oct 2001 to Sep 2009. Obam's first 8 months were under the BUSH budget. So Bush increased the debt 140%. Obama has increased the debt 33%.