A quick, fun experiment:
Type "Obama blames Bush" into your Google search window. I got "About 4,330,000 results (0.14 seconds)"!
Then shorten to just "Obama blames". I got "About 6,890,000 results (0.16 seconds)"!
For extra credit, estimate in how many of the 6,890,000 instances he blames himself or his own administration.