Donald Trump was sworn in as the 45th president of the United States on Friday in Washington, D.C. He stuck to populist themes in his 16 minute address, with one line in particular capturing the main message: "From this day forward, a new vision will govern our land. From this day forward, it's going to be only America first." He then made his first official moves as president, signing a number of acts into law during a ceremony following the inauguration. The first approved a law passed by Congress that lets Gen. James Mattis serve as Secretary of Defense. The others created a national day of patriotism and made his cabinet nominees official. Trump also signed his first executive order, which White House chief of staff Reince Priebus said is aimed at "minimizing the economic burden" of the "ObamaCare."