The Supreme Court on Friday narrowed the interpretation of a federal criminal law under which many January 6 rioters have been charged, throwing hundreds of such cases into at least partial uncertainty. It was yet another 6–3 decision. But despite the immensely politically-charged nature of the case, it was also yet another time that the votes did not come down along exclusively ideological lines. The majority opinion was written by Chief Justice John Roberts and joined by Justices Clarence Thomas, Samuel Alito, Neil Gorsuch, Brett Kavanaugh, and Ketanji Brown Jackson, the latter of whom wrote…