Publisher Steve Forbes is using an Iowa campaign trip to criticize President George W. Bush's handling of Social Security and the Iraq war. During a Des Moines stop Saturday for Secretary of Agriculture candidate Mark Leonard, Forbes said Bush has been his own worst enemy in his decline in the polls. Forbes said Bush failed to get the Social Security changes he wanted because his plan was too vague and people feared what might happen to their older relatives. In handling the Iraq war, Forbes said Bush again failed to give the public specific information on what was happening there.