McDermott Will & Emery has released the December 2015 issue of Focus on Tax Controversy, which provides insight into the complex issues surrounding U.S. federal, international, and state and local tax controversies, including Internal Revenue Service audits and appeals, competent authority matters and trial and appellate litigation.

Mark Yopp authored an article entitled “Waiting for Relief from Retroactivity,” which discusses how courts are expanding the ability of state legislatures to retroactively change taxpayer liability going back many years.

View the full issue (PDF).