State governments, community groups, advocacy nonprofits and regular Americans have filed a large and growing number of federal lawsuits opposing President Donald Trump’s barrage of executive orders and policy statements. Some of his actions have been put on hold by the federal courts, at least temporarily. As a scholar of the federal courts, however, I expect the courts will be of limited help in navigating through this complicated new political landscape. One problem is that the U.S. Supreme Court in recent years has moved sharply to the right and has approved of past efforts to expand the powers of the...