The Biden Justice Department has decided to go out the way it came in: as a blunt weapon wielded against perceived political enemies. That, at least, is what the FBI raid against Polymarket CEO Shayne Coplan looks like. At 6 a.m. Wednesday, agents stormed his home to demand his phone and other devices. Why? Officially, as part of a criminal probe into the platform for allowing US users to bet on politics via VPN, in contravention of a previous agreement Polymarket made with regulators at the Commodity Futures Trading Commission. That’s pretty deep in the weeds for a predawn raid....