However, I will say that not all of the Katrina problems is Bush's fault. The local and state governments weren't exactly on top of things -- New Orleans in particular is not exactly known for efficient government. IIRC Nagin dragged his heels about evacuation, and apparently some of the issues in the Superdome were wildly exaggerated. Southern Louisiana's economy is not as robust as NJ and NY.
It's also possible or arguable that the overwhelming failure of Katrian put the spotlight on FEMA and disaster prep, which resulted in better preparation for Sandy -- much in the same way that Bush 41's poor response to Andrew forced the issue for Clinton.
FEMA's performance in Katrina was an example of a self-fulfilling prophesy; if you are the ones running the government, and you categorically believe that "government can't be efficient or effective," then you're not a good candidate for making government efficient or effective. It's a recipe for failure. Obama, in contrast, knew that he had to whip FEMA into shape, believed that it was entirely possible to whip FEMA into shape, and the end result was a significantly improved response on all counts.
Last but not least: Whatever his flaws, Christie does not suck up or pull punches. If he didn't think Obama was supporting the recovery efforts, he would undoubtedly express his opinion, in public, in blunt and colorful terms.
"Brownie, you're doing a great job!"
"Groups with guitars are on the way out, Mr. Epstein"
Dick Rowe, A & R man
Early voting in Georgia. On the 20th of October this old Goldwater conservative voted against both Donald Trump and Hillary Clinton by casting my vote for Gary Johnson. Neither Trump or Clinton belong within a million miles of the Oval Office.
"He who does not think himself worth saving from poverty and ignorance by his own efforts, will hardly be thought worth the efforts of anybody else." -- Frederick Douglass, Self-Made Men (1872)
The problem with Christie is he has no problem using the federal govt to prop up his state. While this is sometimes consistent with the Republican platform, its not consistent with conservatism. We dont want to popularize someone who praises a redistributionist and begs for money national money to solve local problems.