evidence: Chief Justice John Roberts heralded the significance of one of the biggest cases from last term, Trump v. United States, with the words, "This case poses a question of lasting significance: When may a former President be prosecuted for official acts taken during his Presidency? Our Nation has never before needed an answer. But in addressing that question today, unlike the political branches and the public at large, we cannot afford to fixate exclusively, or even primarily, on present exigencies." [...] Chief Justice Roberts easily writes the most important opinions according to these measures and he is far ahead of all of the other justices. Below him is a cluster of three more conservative members of the Court, Justices Alito, Kavanaugh, and Gorsuch. The second major cluster mixes conservative and progressive justices and includes Justices Kagan, Thomas, Breyer-Jackson, and Barrett leaving Justice Sotomayor on an island at the bottom. [...] As this writing suggests, Roberts often saves the most important decisions for himself.