Roe v. Wade
Critics of fetal heartbeat bills say that, since "Roe v. Wade" established that states must allow abortion until the point of viability (between 24 and 28 weeks into the pregnancy), that such bills "blatantly contradict" Supreme Court precedent. The 2013 North Dakota heartbeat law was ruled in District Court to be "clearly invalid and unconstitutional based on the United States Supreme Court precedent in "Roe v. Wade"."