Holman Jenkins writes for the Wall Street Journal that major media outlets have shown disinterest in a major piece of the story of the 2016 presidential election.

The two biggest shoes are yet to drop in the 2016 investigations. We still don’t know the origins and back story of the intercepted Russian intelligence document that was pivotal in James Comey’s unprecedented, ill-advised and possibly decisive (according to numerous Democratic and independent election analysts) interventions in the presidential race.

Depending on what report you credit, the information was false, it was planted by the Russians, or it accurately indicated an illegal conspiracy to obstruct justice by the Clinton campaign and Obama Attorney General Loretta Lynch. If it was a Russian fabrication, then Mr. Comey was spoofed by the Kremlin into his improper intervention in the race. If the parties to the incepted exchange were simply misinformed, it’s hard to understand Mr. Comey’s reason for intervening. …

… The second shoe concerns the Steele dossier. Who were the alleged Russian sources behind it? What were their motives? …

… The two stories outlined above are of legitimate, pressing interest, but editors and reporters say to themselves: “Might not looking into these matters be construed as pro-Trump? We can’t have that.” Not one U.S. paper, despite lavish coverage of the DOJ inspector general’s report, even noted the existence of a secret appendix. According to reports in his own Washington Post, Bob Woodward’s forthcoming book will be an upmarket “Fire and Fury” looking into the known knowns of Mr. Trump’s chaotic first year in office. Meanwhile, history is screaming at Mr. Woodward to dig into the known unknowns of U.S. intelligence activities in the campaign that elected Mr. Trump.