Contender J.D. Hayworth, a former Republican congressman, however, has come out to actively support the bill and used McCain's ambiguity to attack him.
"Sen. Russell Pearce of the Arizona State Senate has worked very hard to combat illegal immigration and I think his Senate bill 1070 is a good bill," Hayworth told ABC News.
"Simply stated, we need to give law enforcement officers the tools to do their jobs. Border security is national security and it's time to take handcuffs off law enforcement and put them on criminals who break our laws."