Washington Post: Bush's power grab after Katrina

Shortly after noon on Aug. 31, Louisiana Sen. David Vitter (R) delivered a message that stunned aides to Gov. Kathleen Babineaux Blanco (D), who were frantically managing the catastrophe that began two days earlier when Hurricane Katrina hit the Gulf Coast.
White House senior adviser Karl Rove wanted it conveyed that he understood that Blanco was requesting that President Bush federalize the evacuation of New Orleans. The governor should explore legal options to impose martial law "or as close as we can get," Vitter quoted Rove as saying, according to handwritten notes by Terry Ryder, Blanco's executive counsel.
Thus began what one aide called a "full-court press" to compel the first-term governor to yield control of her state National Guard -- a legal, political and personal campaign by White House staff that failed three days later when Blanco rejected the administration's terms, 10 minutes before Bush was to announce them in a Rose Garden news conference, the governor's aides said.