I'd say Bush dove in head first, but their commentary is blistering:
It isn't easy picking George Bush's worst moment last week. Was it his first go at addressing the crisis Wednesday, when he came across as cool to the point of uncaring? Was it when he said that he didn't "think anybody expected" the New Orleans levees to give way, though that very possibility had been forecast for years? Was it when he arrived in Mobile, Ala., a full four days after the storm made landfall, and praised his hapless Federal Emergency Management Agency (FEMA) director, Michael D. Brown, whose disaster credentials seemed to consist of once being the commissioner of the International Arabian Horse Association?... And he was so slow.
For good measure, here's a profile of FEMA head Michael Brown in the Miami Herald and his "unlikely background."