Abortion rights activists are working on a counterattack to the 200 bills that have passed in states across the U.S. since 2010.

In the past three years, Republican-led legislatures have backed bills to regulate abortions and the doctors and clinics that perform them.

Bills to ban abortions at 20 weeks are among the laws that cropped up three years ago and have now passed in about a dozen states. This year, North Dakota pushed to end abortions at around six weeks of pregnancy.