Arizona Senate candidate J.D. Hayworth (R) launched his most aggressive attack of the primary campaign against Sen. John McCain (R-Ariz.) Friday. The former congressman released his second TV ad of the race, which accuses McCain of supporting an “amnesty bill” for undocumented U.S. residents. The ad features footage of McCain and President Obama talking about the effort to get immigration reform through the Senate. “I helped author with Senator Kennedy comprehensive immigration reform and fought for it twice,” McCain says in the footage. It then transitions to Obama saying, “I stood with Ted Kennedy and John McCain and took on...