People line up to visit the U.S. Supreme Court in Washington March 29, 2016. The U.S. Supreme Court on Tuesday split 4-4 for the first time in a major case since the death of Justice Antonin Scalia on a conservative legal challenge to a vital source of funds for organized labor, affirming a lower-court ruling that allowed California to force non-union workers to pay fees to public-employee unions. REUTERS/Gary Cameron