For Bill Clinton and Al Gore, Iowa last week became their own Field of Dreams. A shimmering summer's day was just beginning its slow fade into dusk as the eight-bus caravan pulled into Manchester for a carefully orchestrated "unscheduled" stop. The local Democrats had done their part -- a crowd of nearly 1,000 had been waiting for several hours to gambol in the limelight. Gore, fast becoming the Ed McMahon of political warm-up acts, gave his patter- perfect introduction, complete with the mawkish reminder that Clinton's father died three months before Clinton was born. Then Clinton clambered up onto the small...

