As White House Anxiety Grows, Bush Tries to Quell Political Crisis

By ELISABETH BUMILLER
and ADAM NAGOURNEY

WASHINGTON, Sept. 3 - Faced with one of the worst political crises of his administration, President Bush abruptly overhauled his September schedule on Saturday as the White House scrambled to gain control of a situation that Republicans said threatened to undermine Mr. Bush's second-term agenda and the party's long-term ambitions.

In a sign of the mounting anxiety at the White House, Mr. Bush made a rare Saturday appearance in the Rose Garden before live television cameras to announce that he was dispatching additional active-duty troops to the Gulf Coast. He struck a more somber tone than he had at times on Friday during a daylong tour of the disaster region, when he had joked at the airport in New Orleans about the fun he had had in his younger days in Houston. His demeanor on Saturday was similar to that of his most somber speeches after the Sept. 11 terrorist attacks.

"The magnitude of responding to a crisis over a disaster area that is larger than the size of Great Britain has created tremendous problems that have strained state and local capabilities," said Mr. Bush, slightly exaggerating the stricken land area. "The result is that many of our citizens simply are not getting the help they need, especially in New Orleans. And that is unacceptable."