NEW : Rick Perry says Mitt Romney 's health plan in Texas mirrors Obama 's . NEW : Romney turns attack on Mitt Romney 's , citing number of uninsured in Massachusetts . Candidates pounce on Perry one -9-9 plan for eradicating tax code . Cain defends plan as `` bold solution ''
NEW : Rick Perry says Mitt Romney 's health plan in Massachusetts mirrors Obama 's . NEW : Romney turns attack on Perry , citing number of uninsured in Texas . Candidates pounce on Herman Cain 's 9-9-9 plan for eradicating tax code . Cain defends plan as `` bold solution ''