FILE - In this July 1, 2010, file photo, Dr. Charmaine Yoest testifies on Capitol Hill in Washington. With a deeper-than-ever split between Republicans and Democrats over abortion, activists on both sides of the debate foresee a 2016 presidential campaign in which the nominees tackle the volatile topic more aggressively than in past elections. "It's an amazing convergence of events," said Yoest, CEO of the anti-abortion group Americans United for Life. "We haven't seen a moment like this for 40 years." (AP Photo/Pablo Martinez Monsivais, File)