Paul Krugman has a more considered view of Rubio's blame-game:
Look, this is one of the most thoroughly researched topics out there, and every piece of the government-did-it thesis has been refuted; see Mike Konczal for a summary. No, the CRA wasn’t responsible for the epidemic of bad lending; no, Fannie and Freddie didn’t cause the housing bubble; no, the “high-risk” loans of the GSEs weren’t remotely as risky as subprime.
This strikes me as a bigger deal than whether Rubio slurped his water; he and his party are now committed to the belief that their pre-crisis doctrine was perfect, that there are no lessons from the worst financial crisis in three generations except that we should have even less regulation. And given another shot at power, they’ll test that thesis by giving the bankers a chance to do it all over again.