BY MICHAEL BARONE Saturday, October 29, 2005 12:01 a.m. EDT Whither the Bush administration? Two months ago, just before Katrina hit New Orleans, the administration had a game plan that it seemed to be, more or less successfully, executing. Since then that plan has been blown away by hurricanes meteorological, political and, yesterday, legal. In late August, Congress seemed primed to extend the earlier Bush tax cuts. House Ways and Means Chairman Bill Thomas seemed ready to push some form of Social Security reform through his committee and the House. John Roberts seemed headed for easy confirmation to Sandra Day...