Under cloudy and rainy skies on the West Front of the U.S. Capitol, Donald Trump was sworn in as the 45th president of the United States.

After a highly contentious election campaign with slogans of “Make America Great Again” and “Drain The Swamp,” the real estate mogul turned president issued another declaration during his inaugural address: “From this moment on, it’s going to be America first.”

Trump was sworn in by Chief Justice John Roberts and took the oath of office in front of all of the living presidents, with the exception of George H.W. Bush, who was hospitalized earlier this week due to illness along with his wife, Barbara. Trump’s election opponent, Hillary Clinton, was part of the dignitaries who attended the ceremony at Capitol Hill.

Trump becomes the oldest president to enter the White House at 70 years old and is the first commander-in-chief to not have held political office or served in the military.

Despite an election that seemed to have left the country divided and even led to dozens of Democratic lawmakers boycotting the swearing-in ceremony, Trump said in his 16-minute inaugural speech that his vision will give control of the United States back to the citizens.

“What truly matters is not which party controls our government, but whether our government is controlled by the people,” he said. “To all Americans in every city near and far, small and large from mountain to mountain, from ocean to ocean, hear these words: You will never be ignored again.”

The Trumps began the day with a prayer service at St. John’s Episcopal Church before their motorcade took them to the White House. In keeping with the tradition of a peaceful transfer of power, the Trumps and the Obamas traveled together to the Capitol for the swearing-in ceremony