T he Border Patrol commander Gregory Bovino posted a video over the weekend showing a pep talk he’d given in Chicago to agents operating far from their usual stations along the Mexico border. Set to a rock anthem by the band Chicago, it was the kind of swaggering, trollish clip that has made him the star of the Trump administration’s mass-deportation campaign. “This is our fucking country,” Bovino told the agents, gathered around him in a parking lot. “Nobody tells us where to go, when to go,