Louisiana in particular suffered devastating damage beyond the capacity of a state and/or local government to provide all the necessary action. The fact is MS is still rebuilding to this day.
I don’t doubt that they are, or that the states were woefully unprepared. I do doubt that the Fed, under any administration, would be better able to help.
Haley Barbour has done an excellent job with recovery in Mississippi, without the grandstanding and finger-pointing and snarls of red tape and bureaucracy that have occurred in Louisiana, and having to deal with a much worse situation in material damage. He did of course have an advantage people-wise.