Bolten to Replace Card As Chief of Staff

White House chief of staff Andy Card has resigned and will be replaced by budget director Joshua Bolten, President Bush announced Tuesday amid growing calls for a White House shakeup and Republican concern about Bush's tumbling poll ratings.

Though there was no immediate indication of other changes afoot, the White House did not close the door on a broader staff reorganization. White House press secretary Scott McClellan said Bolten will have the authority to make personnel shifts if he deems them necessary, and he declined to say whether top aides, such as the two current deputy chiefs of staff, Joe Hagin and Karl Rove, would remain in place.

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