Here is a no bullshit assessment about what exactly the debt under Obama is composed of. As you can see Obama's biggest expenses were his TAX CUTS and defense spending.
Actually, that is bullshit.
No one can say for certainty whether reductions in tax rates result in more or less tax revenues. We have ample examples throughout history of revenues going up after tax rate cuts just as we have examples of revenues decreasing following cuts. We also have examples of revenues falling after a tax rate increase as well as the opposite. Tax rate changes are but one factor effecting the direction of the economy, which is the main driver of tax revenues. Further a tax rate change is not always an across-the-board increase or decrease. Increasing the base of tax payers, for instance, can have a more profound effect on revenues than changing existing rates.
Bottom line, your assessment is in fact, BULLSHIT.
Bush engaged in ridiculous levels of deficit spending. Obama took that to astronomical levels.