Was Bush not a part of it? Obviously, Congress matters, too, but the President also has veto power.
I'm sticking with my premise that any attempt to pin the accumulated national debt on one president is myopic, simply due to the fact that it's a long term issue that outlives presidential administrations, sessions of Congress and even some of the financial institutions involved.
And also, the FACT that SOME of the national debt is a valuable financial instrument and is much NEEDED.
Large investors now depend on secondary markets of government debt for liquidity and other investment purposes.
Many private pension plans and insurance companies also use government debt for investments, so government debt interest subsidizes less wealthy indirect investors.
The dollar bill ITSELF is also a form of government debt.
With regard to the U.S. Treasury, all issues since 1985 have been non-callable. That is, the borrower cannot "call" the bond and redeem it for its principal amount before its stated maturity date.
There are even some financial experts who say that if we paid off all of the national debt, there would be no more money, because the national debt finances all of the other debt. When is a dollar "born?" A dollar is created in the moment that a loan is made at a bank. How is a loan made at a bank? Banks are able to loan based on their funds in deposit. Banks borrow funds from the Fed at the Fed window. The Fed is creating money based on debt issued by the Treasury - the national debt.
Thus, if we were to suddenly pay down all that debt the money that was "born" at the time the loans were made, "dies" or "evaporates" at the point in time when it is repaid, people would have to repay the loans that were made based on the dollars generated for deposit reserves and therefore, we would have no more money.