DOVER, N.H. (AP) — Presidential contender Herman Cain says Michele Bachmann's migraine headaches are a non-issue.Speaking after a New Hampshire Republican Party fundraiser, the former Godfather's Pizza CEO weighed in on Bachmann's health, which has become the focus of intense scrutiny in recent days.Bachmann, a Minnesota congresswoman and presidential candidate, is a tea party favorite like Cain. She acknowledged this week suffering from migraines.Another GOP presidential contender, former Minnesota Gov. Tim Pawlenty, suggested the issue is a legitimate concern.Not so with Cain, who likened Bachmann's migraines to his own battle with cancer. He says he's been cancer-free for five years and just had his latest round of tests this week. He says he'll have a written statement from his doctor tomorrow that certifies a clean bill of health.