Look when spending skyrocketed - it was when pelosi took over in 2007 w reid.
Its not bush alone who caused this.
Bush is largely at fault...
Federal spending as a percent of GDP:

Here, BTW, is tax revenues as a percent of GDP:

So had Bush kept spending at 18% of GDP, we would've had budget surpluses for the majority of Bush's two terms. Which, BTW, had he only increased spending to keep up with inflation and population growth, spending as a percent of GDP would have been down below 18%.
The problem with Bush was:
- Two wars and nation building
- Creation of an extensive security state
- Medicare Part D ($17 trillion in unfunded liabilities)
- Massive expansion of non-security related discretionary spending (e.g. Depts of Ag and Ed)
- Failure to reform Social Security and Medicare