Sen. Markwayne Mullin (R-Okla.) reacted to news that he will replace former Homeland Security Secretary Kristi Noem, calling it "pretty neat." "It's just pretty humbling when you start to think about it," Mullin told reporters. "Little kid from west Oklahoma gets to serve in the president's cabinet. That's pretty neat." Mullin was sparse on details of his new role, but said he will be "laser focused." "We're gonna get the Department of Homeland Security, making sure that we stay focused on