Allies of Mike Rogers , Michigan's GOP nominee for the U.S. Senate, have asked AIPAC not to advertise on his behalf, triggering a rupture with the powerful but polarizing pro-Israel group. Rogers spoke with AIPAC chair Michael Tuchin in Los Angeles last week. The next day, AIPAC shelved an already-cut video ad targeting Rogers' Democratic rival, outspoken Israel critic Abdul El-Sayed. Why it matters: The extraordinary tension underscores how far AIPAC's political standing has fallen amid voters'