Does McCain back ban on Arpaio immigration sweeps?

Politico reports that Sen. John McCain -- a fervent sponsor of immigration reform -- is once again being dragged into the messy border war of Maricopa County Sheriff Joe Arpaio, who is defying the Obama administration's ban on his highly controversial illegal immigrant sweeps in the Phoenix area. McCain's office wouldn't say whether he supported or opposed the move. But late Friday, McCain wrote Napolitano asking for an explanation, asking for her to "please provide the rationale for terminating the Task Force Model in Maricopa County and the criteria that made the Maricopa County Sheriff’s office ineligible to continue in the Task Force Model."