NEW YORK - President Bush (news - web sites) and Sen. John Kerry (news - web sites) clashed over figures showing modest monthly jobs growth Friday as they plunged into a nine-week post-convention sprint toward Election Day. Previous presidents "have faced wars and recessions, but not one of them has failed to create a single job," Kerry said. He said the most recent statistics made it inevitable that Bush's term would end with a net loss of employment. Not surprisingly, Bush offered a different interpretation. "Overall, we've added about 1.7 million jobs since August 2003. The unemployment rate is down...