President Bush's troubles with congressional Republicans, which erupted during the backlash to the Dubai seaport deal, are rooted in policy frustrations and personal resentments that GOP lawmakers say stretch back to the opening days of the administration. For years, the Bush White House and its allies on Capitol Hill seemed like one of the most unified teams Washington had ever seen, passing most of Bush's agenda with little dissent. Privately, however, many lawmakers felt underappreciated, ignored and sometimes bullied by what they regarded as a White House intent on running government with little input from them. Often it was to...