SAUDI 'SOLDIER' BY STEPHEN SCHWARTZ IN Alexandria, Va., on Tuesday, a 23-year-old Northern Virginia man of Saudi Arabian background named Ahmed Omar Abu Ali was charged with conspiring to assassinate President Bush. Abu Ali and his accomplices are accused of plotting to kill the president by gunfire or a car bomb. The indictment also spells out such criminal activities as assisting and receiving support from Osama bin Laden's band of murderers. Abu Ali was extradited to Virginia after many months in a Saudi jail. What's most remarkable about this case is the degree to which this would-be assassin is a...