Hurricane Katrina struck at the core of Bush's presidency by undermining the central assertion of his reelection campaign, that he was a strong and decisive leader who could keep the country safe in a crisis. Never again will the White House be able to point to his often-praised performance after the attacks of Sept. 11, 2001, without skeptics recalling the fumbling and slow-off-the-mark response of his administration after the hurricane and the flooding in New Orleans.

http://www.truthout.org/docs_2005/091605J.shtml