I’m a layman, but I find it difficult to see what in the Nunes memo could possibly endanger our national security. Here is Eric Holder in a good example of the over-wrought warnings of the catastrophic effects of the memo:
People must understand what is at stake by release of the bogus, contrived Nunes memo. It uses normally protected material and puts at risk our intell capabilities in order to derail a legitimate criminal investigation. This is unheard of- it is dangerous and it is irresponsible
— Eric Holder (@EricHolder) January 31, 2018
That the DOJ and the FBI were so resistant to the release of such a document, whose only threat seems to be airing information embarrassing to the FBI, goes to one of the reason Nunes and Co. have been so suspicious of both: They have stonewalled the committee every step of he way.