Most of them – at least most of them that are continuing to aggravate it.
[T]he main drivers of projected deficits over the next decade are the wars of the oughts in Iraq and Afghanistan, the Bush tax cuts and the so-called “automatic stabilizers†— unemployment insurance spending, lower tax burdens — built into existing policy to combat economic downturns. Recovery measures by Bush and Obama caused a short-term spike in deficits but have mostly phased out and thus represent only modest fractions of the national debt.