Hind sight is always 20/20 and although people will debate whether or not it was handled correctly. However, given the situation and the resources and what was actually known about what was going on at the time. The government did the best with the knowledge that had. There are assumptions tat the government is an omnipotent entity when in reality it is just a group of people.
No, the US federal government did not properly handle Hurricane Katrina and the subsequent aftermath. There were not nearly enough evacuations, therefore many people were severely affected in a negative way. Also, the response by the US government and FEMA was harshly criticized due to their slow response times and the overall handling of the disaster.
Katrina was an after-action. Instead of preparing and evacuating before the storm, the government waiting until after the devastation was dealt to really step in and try to help people. There are hurricane preparations in line that need to be executed a couple days out from the storm to be effective. The government decided it would hold off to see if spending those funds would be necessary and they were unable to evacuate the critical needs citizens. Acting early would have helped save people's lives in this situation, instead we acted post disaster and tried to clean up as best we could.
It is a well known fact that the federal government did not handle Hurricane Katrina properly. There is nothing we can do to change this problem now. The results of that hurricane were bad and the Bush administration did not implement the proper amount of assistance. It's not the only thing the administration did wrong.