Mr. Brown's account, in which he described making "a blur of calls" all week to Mr. Chertoff, Mr. Card and Mr. Hagin, suggested that Mr. Bush, or at least his top aides, were informed early and repeatedly by the top federal official at the scene that state and local authorities were overwhelmed and that the overall response was going badly. ...Mr. Brown's version of events raises questions about whether the White House and Mr. Chertoff acted aggressively enough in the response. New Orleans convulsed in looting and violence after the hurricane, and troops did not arrive in force to restore order until five days later. ...He said his biggest mistake was in waiting until the end of the day on Aug. 30 to ask the White House explicitly to take over the response from FEMA and state officials. ...On Monday night, Mr. Brown said, he reported his growing worries to Mr. Chertoff and the White House. He said he did not ask for federal active-duty troops to be deployed because he assumed his superiors in Washington were doing all they could. Instead, he said, he repeated a dozen times, "I cannot get a unified command established."

Katrina recovery costs expected to exceed $200 billion, more than U.S. has spent on Iraq war.