The reason Barack Hussein Obama got elected is because of the shortcomings of George W. Bush. Had Bush been more charming and less awkward, more of a Ronald Reagan and less of a Richard Nixon, a nation that is majority conservative would have elected another Republican as his successor.
The reason we got Democratic majorities in Congress starting in 2006 and continuing in 2008 is because the GOP Congress was corrupt and spent money like Democrats. Had the Congress acted like Republicans are supposed to, the public might well have continued to elect Republican majorities in Congress.
So when the Obamacrats say that whatever is going wrong is the fault of their predecessors, they are right, albeit for the wrong reasons. Had the GOP done a better job, a conservative nation would not have elected to office Dems who have run up unbelievable deficits, crippled our foreign policy and destroyed our health care system.
I cannot blame Democrats for acting like Democrats, and I cannot blame the electorate for voting against incumbents who fail to perform. I must blame those less-than-successful incumbents: President Bush and the GOP majorities in Congress. So, yes, it is Bush's fault we have to contend with a President Obama.