Six of the nine Supreme Court justices attended the State of the Union address in January, but don’t be surprised if that number goes way down next year, in light of comments made by Chief Justice John Roberts Jr. in Alabama on Tuesday.

Roberts spoke to University of Alabama Law School students in Tuscaloosa. During a question-and-answer period, he was asked about the rare episode at this year’s address, in which President Barack Obama criticized the Court’s campaign finance ruling Citizens United v. Federal Election Commission, with the justices sitting in front of him. Senators sitting near the justices stood and cheered Obama’s remarks while the justices, as is their custom, sat impassively. Only Justice Samuel Alito Jr. registered mild disapproval, furtively shaking his head and appearing to mouth the words “not true.”