Are House Democrats willing to jeopardize national security to keep alive their Trump-Russia collusion narrative? On Wednesday they abruptly canceled a markup on a bill to reauthorize three critical surveillance tools that are due to expire March 15.

To listen to the liberal media, the bill has stalled over concerns about “civil liberties.” In truth it’s the latest casualty of Democrats’ refusal to acknowledge that the Federal Bureau of Investigation abused the Foreign Intelligence Surveillance Court in its 2016 counterintelligence...