Even as more qualified legal scholars than I could ever hope to be analyze the ramifications of U.S. Supreme Court Chief Justice John Roberts’ convoluted ruling on the so-called Affordable Care Act (more appropriately dubbed “Obamacare”), a new sport has arisen among pundits, talking heads, court watchers and other members of the chattering classes — a game of attempting to determine Roberts’ motive for upholding the president’s signature legislative achievement.