But according to a memo obtained by Knight Ridder,
Chertoff didn't shift that power to Brown until late afternoon or evening on Aug. 30, about 36 hours after Katrina hit Louisiana and Mississippi. That same memo suggests that Chertoff may have been confused about his lead role in disaster response and that of his department.
"As you know, the President has established the `White House Task Force on Hurricane Katrina Response.' He will meet with us tomorrow to launch this effort. The Department of Homeland Security, along with other Departments, will be part of the task force and will assist the Administration with its response to Hurricane Katrina," Chertoff said in the memo to the secretaries of defense, health and human services and other key federal agencies.
On the day that Chertoff wrote the memo, Bush was in San Diego presiding over a ceremony marking the 60th anniversary of the end of World War II.
Chertoff's Aug. 30 memo for the first time declared Katrina an "Incident of National Significance," a key designation that triggers swift federal coordination. The following afternoon, Bush met with his Cabinet, then appeared before TV cameras in the White House Rose Garden to announce the government's planned action.
That same day, Aug. 31, the Department of Defense, whose troops and equipment are crucial in such large disasters, activated its Task Force Katrina. But active-duty troops didn't begin to arrive in large numbers along the Gulf Coast until Saturday.
White House and homeland security officials wouldn't explain why Chertoff waited some 36 hours to declare Katrina an incident of national significance and why he didn't immediately begin to direct the federal response from the moment on Aug. 27 when the National Hurricane Center predicted that Katrina would strike the Gulf Coast with catastrophic force in 48 hours. Nor would they explain why Bush felt the need to appoint a separate task force.
Chertoff's hesitation and Bush's creation of a task force both appear to contradict the National Response Plan and previous presidential directives that specify what the secretary of homeland security is assigned to do without further presidential orders. The goal of the National Response Plan is to provide a streamlined framework for swiftly delivering federal assistance when a disaster - caused by terrorists or Mother Nature - is too big for local officials to handle.
Dana Perino, a White House spokeswoman, referred most inquiries about the memo and Chertoff's actions to the Department of Homeland Security.