http://www.slate.com/id/2146868/?nav=ais--snips
In a February speech, Vice President Cheney said, "It's time to re-examine our assumptions and to consider using more dynamic analysis to measure the true impact of tax cuts on the American economy."
...Six months later, Treasury's first dynamic analysis of the president's policies is out. It belies the claim that the Bush proposal to make his tax cuts permanent will either pay for itself or galvanize the economy.
...In place of a false choice of tax cuts magically paying for themselves and not costing anything, the Treasury offered a very real and painful one: The tax cuts need to be paid for by "either cutting future government spending or raising future taxes." And even if you take the path of cutting government programs—which is not the path the country is on today—Treasury found only minuscule economic effects from the tax cuts: a mere 0.7 percent increase in the size of the economy after many years.