(AP Photo/Jose Luis Magana) In this Friday, Jan. 18, 2019, file photo, anti-abortion activists march outside the U.S. Supreme Court building during the March for Life in Washington. Activists on both sides of the abortion debate react cautiously to a Thursday, Feb. 7, 2019 ,Supreme Court vote blocking Louisiana from enforcing new abortion regulations, agreeing that the crucial tests of the court's stance are still to come.