Do a little research:
http://www.nlihc.org/detail/article.cfm?ar...=1920&id=72
HUD actually identified a large quantity of avilable units within a few days of Katrina to move displaced people from that region into homes. It was stopped because of protests and huge liberal media backlash about HUD moving these diabled folks to the front of the list to get federal assistance, over folks who were only in state and local assitance programs which are not nearly as generous. In fact the those available units discussed were actually in cities where there was noone eligible on waiting lists, so in fact none was being moved down a waiting list or anything else. But of course this was not what the public was told and once one message gets out from the press it overrides everything, including the truth. So if you'll go through that sight several other attempts were made, but twarted by the left to make the admin look bad, even if it hurt the displaced folks in the hurricanes path.
In fact that sight has a whole lot of documentation from Frist and crew on bills and funding overrides that they wanted passed to help FEMA and HUD as well as other agencies quickly respond, but alas, nothing or little was passed by congress.