Planned Parenthood of Arizona president and CEO Bryan Howard, explains it's ending abortion services in three Arizona cities to comply with state laws that place restrictions on abortions, Thursday, Aug. 18, 2011, in Glendale, Ariz.

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Presidential hopefuls Rep. Michele Bachmann (R-MN), who signed a pledge against abortion rights, and businessman Herman Cain, who has not, seen at the taping of a radio show in New Hampshire in May. Jim Cole/AP hide caption

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(March 29, 2011 file photo from Chicago): Controversial anti-abortion billboards depicting President Obama. They were sponsored by ThatsAbortion.com. Scott Olson/Getty Images hide caption

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