By John DiMauro, 247Trumpnews.com WASHINGTON  — In a major victory for national security, President Trump officially swore in former Senator Markwayne Mullin  as the new Secretary of Homeland Security today in the Oval Office. Describing Mullin as "strong, professional, and fair," the President made it clear that the era of border uncertainty is over.  The ceremony was a powerful display of the deep, personal bond between the two men—a friendship forged not in politics, but i