Louisiana politics, that is. And possibly the Army Corps of Engineers too, though they're probably more in the mold of when all you have is a hammer, everything looks like a nail.
Pretty much everybody now, even the Corps and the crookedest of politicos, recognizes that the only way to save New Orleans is to and quit building levees and channels and to restore the wetlands.
That last may be an impossible task by now, with so much of the land south of New Orleans sunk into the gulf over the years, no new sediment from upriver washing down to rebuild the delta, and much of the water supply for the remaining land suffering from saltwater intrusion. The huge cypress swamps that used to lie between New Orleans and the Gulf of Mexico, providing a buffer against storm surge, are gone. They're not likely to come back anytime soon either. Cypress trees love standing around in water up to their knees, but not if it's got salt in it.
Which may explain why, even though every-fucking-body knows it's not the right answer, they're planning to spend all the money building the Great Wall of Louisiana.
Or maybe it's still just crookedness-as-usual.