To summarize: in a document that the FBI called inaccurate, House Republicans claim that the Democrats had some shadowy role in a pre-election Fisa warrant against a “very low-level” Trump adviser who had already left the campaign. Compared with the Nunes memo, the never-ending, dry-hole Republican Benghazi investigations look like textbook examples of prudent congressional oversight.

To Trumpian true believers, the Nunes memo proves that the FBI and the rest of the Deep State were conspiring to throw the election to Hillary. Of course, this omits the pesky detail that on 28 October 2016, the FBI director, James Comey, announced that he was reopening the Clinton email investigation based on what had been found on Anthony Weiner’s computer.

Guess which late October event had more effect on wavering 2016 voters: Comey’s dramatic public statement raising fresh doubts about the Democratic nominee or a secret warrant against a peripheral Trump adviser?