Yeah, this is what happens when you have the GOP in control of Congress and thus the nation's 'Purse Strings'.
Despite 9/11/, the economic problems that resulted, and 2 wars, Bush only added $1.3 Trillion in new debt his 1st 6 years. In 2006 Democrats took over Congress - both the House and Senate, being 3 seats shy of having a Super Majority control of Congress.
The year before they took over was the last year the US Government - Congress - would pass a Budget, which is required BY LAW annually. Under Democrat control Congress did not pass an official budget for the next 5 years...until the Republicans took over Congress (the House) again.
Also, in Bush's last years in office during which a near Super Majority Control of Congress was held by Democrats, an additional $2.5 Trillion in new debt was added. So out of the $4 Trillion in debt added over 8 years - credited to Bush - Democrats added $1 Trillion more in debt in only 2 years than had been spent for the 1st 6 years of the Bush Presidency.
Democrats held this near Super Majority control of Congress through the end of Obama's 1st 2 years as President, during which time they spent like drunken sailors:
- Nearly $1 Trillion for a FAILED Stimulus Bill that contained over 7,000 pieces of personal/party-serving DNC-ONLY pork and resulted in costing Americans OVER $742,000 PER JOB Obama CLAIMED to have created / saved.
- The ACA, a socialist nightmare sold as a program that would not cost a dime but which would pay for itself. They couldn't even build a web site that worked, and they spent hundreds of millions of dollars trying to build it.
President Obama, without GOP 'adult' fiscal supervision, set 'Monthly', 'Annual', and 'Total' US Deficit-Spending records, often breaking his own records in the process, on the way to adding OVER $6 Trillion in new debt, more debt than EVERY US President in history COMBINED. (Those records still stand and probably will for a VERY long time. I think he also has the record for 'Most Money Spent With So Little To Show For It'.

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Amazing how after the GOP won back the House the Federal Govt began complying with the law again and passing budgets and how the ANNUAL (Not total debt) debt began to drop.
Of course to be fair to Obama, right after he caused the US Credit Rating to drop for the 1st time in history (by rejecting the bank's warning that if he did not accept more budget cuts to prove he was serious about reducing the deficit the bank would cut the rate), the 1st thing he did after sending numerous federal agencies to audit and punish the bank for daring to follow through with the downgrade was to begin reigning in his record-setting spending...a little. So, good job, Barry!