Now we know why the FBI tried so hard to block release of the House Intelligence Committee memo. And why Democrats and the media want to change the subject to Republican motivations. The four-page memo released Friday reports disturbing facts about how the FBI and the Foreign Intelligence Surveillance Court appear to have been used to influence the 2016 election and its aftermath.

The White House declassified the memo Friday, and you don’t have to be a civil libertarian to be shocked by the details. The memo confirms that...