At this time last year, the Supreme Court seemed to me a mirror of America, hopelessly polarized along party lines. High-profile decisions in campaign finance, contraceptive coverage and public-employee unions had divided the Court into red and blue wings. It was the 10th term of Chief Justice John Roberts, I wrote, and “his quest for a non-partisan Court seems in retrospect like the impossible dream.” A year later, the situation is subtly different.