Maybe he could let some of them move to the Presidio .
The ninth ward probably can't be rebuilt because they don't build little homes like that any more (at least around where I live), and they probably were under-insured or uninsured.
Furthermore, there's no point in rebuilding it unless and until they spend millions/billions on the levee. There probably isn't an easy answer.
Who wants to live there now anyway? Most of the former occupants were forced to move to greener pastures and probably don't want to come back.
If they fix the levee, they will probably need to build multi-family housing. In all fairness, it is probably a hard decision to make what to do with it.
I've read that there is much cleaning up to be done yet. That should be done, and I don't know why the delay on that.
Is anybody living there now or is it a "ghost" ward?