Next in our tower of folly is the institutional level. Trump has had difficulty staffing his administration, his secretary of state is muttering about leaving, and his White House is riven by factionalism and paranoia. Meanwhile, he is both under investigation by Senate Republicans and dependent on their good will to keep the investigations contained to just the Russia business.

Trying to defenestrate Sessions, the lone Republican senator in Trump’s corner during the primary campaign and a popular figure among his former Senate colleagues, will make things worse for the president on both fronts. It demonstrates a level of disloyalty that should send sane people running from Trump’s service, it tells other cabinet members to get out while the getting’s good (and to leak and undermine like crazy on their way), and it further alienates Republican senators whom Trump needs to confirm appointees (including any Sessions replacement) and to go easy on his scandals.

Next on our tour is the level of mass politics, where Trump’s war on Sessions is one of the few things short of a recession that could hurt him with his base — which he needs to hold, since he isn’t doing anything to persuade anyone outside it.