the former republican senator from pennsylvania , who is likely to mount another presidential campaign in 2016 , said on cbs ' '' on sunday that pence 's decision to sign a follow-up bill .
the law unleashed an intense backlash against indiana , amid concerns it would allow businesses to turn away gay and lesbian customers .
the indiana uproar drew nearly all of the gop 's 2016 contenders into the debate , with candidates like jeb bush , marco rubio and ted cruz rushing .