Whenever you hear complaints that some event is being "politicized" you know you are listening to a spin doctor, hack, or apologist for power. Nothing exists in a vacuum. Disease and natural disasters may not be created by humans (although they can help), but they interact profoundly with public policy to produce their effects.
State national guard units are first responders in emergencies. They know the communities, they know the people in the communities - naturally they are the people who can serve most effectively. If thousands weren't off in Iraq fighting for Halliburton, Exxon-Mobil, Lockheed Martin, and their proxies in the white house, then thousands wouldn't have had to lose their lives in Louisiana, Mississippi, Alabama and Florida.
This is an instance of a larger principle. People are needed in their communities. We have a lot of work to do. Poverty, HIV, violence, joblessness - these can all be addressed through our shared resources, both human and fiscal. But militarism is sucking us dry. Our wages are being attached to the tune of half a trillion dollars a year nationally. That money is being used to enrich weapons manufacturers, energy interests and other war profiteers. So we can't afford to build a levy system in New Orleans that doesn't spring holes or a fail-safe backup. Does anyone believe that's an engineering impossibility? Thirty-five years ago manned moon missions were being conducted.