A year ago, few Americans knew Gregory Bovino’s name. Now he’s the face of the Trump administration’s immigration crackdown. And everything from the Border Patrol commander-at-large’s tactics in the field to his wardrobe choices have become lightning rods in a storm with no end in sight. On the streets of multiple American cities, Bovino – sporting a buzzcut and the Border Patrol’s olive green uniform – has been spotted leading patrols, hurling tear gas canisters and verbally sparring with critics. He often stands out among groups of federal officers as one of the few people not wearing a mask. On...