Wealthy Arab-Americans and foreign-born Muslims who strongly back President Bush's decision to invade Iraq are adding their names to the ranks of Pioneers and Rangers, the elite Bush supporters who have raised $100,000 or more for his re-election. This new crop of fund-raisers comes as some opinion polls suggest support for the president among Arab-Americans is sinking and at a time when strategists from both parties say Mr. Bush is losing ground with this group. Mr. Bush has been criticized by Arab-Americans who feel they are being singled out in the fight against terrorism and who are uneasy over the...