PERRspectives: The National Debt? Republicans Built That
"President Bush added $5.1 trillion in red ink to the national ledger. But while the debt has grown by over $5 trillion during Obama's first term, less than $1 trillion can be attributed to new programs he put in place. The rest is the result of the tax revenue loss from the deep recession which began in December 2007 and the continuation of policies inherited from George W. Bush."