A U.S. senator from Oklahoma who is poised to join President Donald Trump's cabinet says it was a serious brain injury to his son that drew him closer to the president. OKLAHOMA CITY (AP) — Sen. Markwayne Mullin, Donald Trump’s nominee to replace Kristi Noem as Homeland Security secretary, traces his close bond with the president to a scary personal moment in 2020, when Mullin’s son suffered a severe brain injury du... [7164 chars]