Hurricane Katrina Disaster Inquiry Commission Act of 2009 - Directs the President to establish an independent nonpartisan Commission within the executive branch to discover and assess the circumstances relating to the damage caused by Hurricane Katrina on or between Friday, August 26, 2005, and Tuesday, August 30, 2005.
Directs the Commission to: (1) chronicle the trajectory of Hurricane Katrina, including the timetable and locations of its path, and the responses made by the federal, state, and local governments; (2) estimate the loss of life, physical and structural damage, and displacement of residents; (3) recommend corrective actions; and (4) prepare a report to Congress, the President, and the public.