Well, that was a rout. Federal Judge Richard Leon on Tuesday gave the Justice Department a much-needed kick in the shins by greenlighting AT&T’s merger with Time Warner without conditions. President Trump’s antitrust chief Makan Delrahim should reflect long and hard on how the government so misjudged the law and the media marketplace.
The Justice Department last November sued to block the $85 billion deal on the dubious theory that the combined company would hinder competition by forcing competitors to pay hundreds of...