Trump [has] refused to endorse a federal ban on abortion, allowing some top rivals to get to the right of him on an issue that animates many conservative activists. ... That tension underscores the new reality the GOP finds itself in more than a year into the post-Roe era. While top Republicans were long able to simply declare themselves opposed to abortion, they must now contend with more complicated questions — including when access should be banned and whether uniform standards might apply across the U.S., even in states where support for abortion rights runs deep. “There’s a wide variety...