In fairness, he did talk about the responsibility of the states in the initial phases and I believe he mentioned also how W/Feds were ready to go into NO, but weren't allowed.
He is backtracking because the FACTS are finally coming out, an I will bet he has heard from a lot of people like me.
I don't like people who won't stick with the President when the media goes into full-blown attack. They are cowards and opportunists, regardless of their political conservatism.