Maury Harris, chief economist at UBS Securities, and John Silvia, chief economist at Well Fargo Securities LLC, talk about today’s report showing American employers added jobs at the slowest pace in nine months in June.   Employers increased payrolls by 18,000 workers, less than the most pessimistic forecast in a Bloomberg News survey of economists, which called for growth of 105,000. Harris and Silvia speak with Tom Keene on Bloomberg Television's "Surveillance Midday."