June 21, 2018 MANDEL NGAN/AFP/Getty Images Homeland Security Secretary Kirstjen Nielsen probably shouldn't have gone to a Mexican restaurant while the government was splitting mostly Latino migrant children from their parents at the southern border. But in all fairness, Stephen Miller did it first. Two days before Nielsen was publicly shamed for the family separation policy, President Trump's senior policy adviser similarly didn't think twice about eating at a Mexican restaurant, the New York Post reports. While protesters didn't flood the restaurant as they did with Nielsen, one customer did jump in. "Hey look guys, whoever thought we'd be in...