The most inadvertently honest reaction to Attorney General William Barr’s congressional testimony this week came from former Director of National Intelligence James Clapper. Mr. Barr had bluntly called out the Federal Bureau of Investigation for “spying” on the Trump campaign in 2016. Mr. Clapper said that was both “stunning and scary.” Indeed.

No doubt a lot of former Obama administration and Hillary Clinton campaign officials, opposition guns for hire, and media members are stunned and scared that the Justice Department...