Two union members who live in far north suburban Lincolnshire used the U.S. Supreme Court’s controversial 2018 decision on the compelled-subsidy doctrine — the 5-4 ruling in Janus v. AFSCME, 138 S. Ct. 2448 — to sue the village in federal court for allegedly violating their First Amendment rights by using their tax dollars to fund the Illinois Municipal League’s efforts to promote former Gov. Bruce Rauner’s Turnaround Agenda.The first hurdle for Dixon O’Brien and John Cook was to prove …