In the four and a half decades since the Supreme Court legalized abortion in the landmark case, Roe v. Wade, it has fallen to state legislatures to pass laws designed to limit abortion.

Now, with state legislatures around the country gathering for their 2018 legislative sessions, experts on both sides of the abortion debate expect policymakers will continue to chip away at Roe v. Wade, even as some state policies are weaving their way through the courts.