WASHINGTON -- An enduring mystery of the response to Hurricane Katrina is how top federal officials remained unaware for days about the thousands of flood victims stranded at the Ernest N. Morial Convention Center without food, water or security. (snip) The chairwoman of the Senate committee investigating the government's response to the storm lay part of the blame at the feet of New Orleans Mayor Ray Nagin. Sen. Susan Collins, R-Maine, on Wednesday accused Nagin of failing to alert federal disaster officials that he was steering storm victims away from the chaos and filth at the Superdome to the Convention...
