tax professionals, academics, think tanks, and political outlets. Communications Research Problem 4. Wisconsin Central, Ltd. v. U.S., No. 17-530 (USSC, 6/21/18) addresses the issue of whether employee stock options are taxable income under the Railroad Retirement Tax Act. Locate this Supreme Court decision, prepare a summary of the court's opinion, and e-mail it to your instructor. tax professionals, academics, think tanks, and political outlets. Communications Research Problem 4. Wisconsin Central, Ltd. v. U.S., No. 17-530 (USSC, 6/21/18) addresses the issue of whether employee stock options are taxable income under the Railroad Retirement Tax Act. Locate this Supreme Court decision, prepare a summary of the court's opinion, and e-mail it to your instructor