M arkwayne Mullin cultivated a reputation in Congress as a brawler, but he sounded more like a peacemaker as he was sworn in this week as secretary of the Department of Homeland Security. “I don’t care what color your state is. I don’t care if you’re red or you’re blue,” Mullin, a former mixed-martial-arts fighter, said during the brief Oval Office ceremony, with President Trump looking over his shoulder. “My job is to be secretary of Homeland and to protect everybody the same.” Mullin’s