Here is a direct link to the GAO unit that examines disaster assistance:

Recent hurricanes, wildfires, and other events have highlighted the challenges the federal government faces in responding effectively to natural and man-made disasters—both in terms of immediate response and for long-term recovery efforts. GAO has identified challenges and areas for improvement in disaster response and recovery, fiscal and administrative challenges in the National Flood Insurance Program, and federal preparedness and response to public health emergencies.