It is a natural disaster of unprecedented proportions, I'd say a bit of TR (the other Roosevelt) is due here.
TR believed in self-reliance, and he didn't run budget deficits.
It wasn't a "natural disaster". The situation was the direct result of a long-running, totally irrational policy of pouring money into enlarging a city which is totoally dependent on artificial walls and pumps to keep it from being underwater. A huge amount of that money came from the federal government -- subsidizing public housing, airports, ever-increasing numbers of students attending these below sea level colleges on government financial aid, and don't forget the super-dangerous government bio lab whose staff had to urgently get back into the place AFTER the hurricane/levee break to destroy the stockpile ofextremely dangerous microorganisms before they spread into the chaos.
Not one cent of federal money should be spent, directly or indirectly, to rebuild this travesty, or to relocate people back into it, or to provide flood insurance to any property owner there.