NEWSPope Francis in Washington D.C.U.S. President Barack Obama greets Pope Francis on his arrival at Joint Base Andrews in Maryland on Tuesday, Sept. 22, 2015. The pope is making his first trip to the United States on a three-city, five-day tour that will include Washington, D.C., New York and Philadelphia.Olivier Douliery, TNSPresident Barack Obama greets Pope Francis on his arrival.Olivier Douliery, TNSPope Francis walks with President Barack Obama upon arrival.Saul Loeb, AFP/Getty ImagesClergy brace for the wind as they stand along the red carpet on the tarmac at Andrews Air Force Base.Andrew Harnik, APPresident Barack Obama and daughter Sasha arrive to greet Pope Francis.Tony Gentile, AFP/Getty ImagesPope Francis disembarks from his airplane.Saul Loeb, AFP/Getty ImagesPope Francis walks with President Barack Obama after arriving at Andrews Air Force Base.Susan Walsh, APFirst lady Michelle Obama welcomes Pope Francis to the United States.Tony Gentile, AFP/Getty ImagesPope Francis shakes hands with first lady Michelle Obama as President Obama and their daughters, Malia, left, and Sasha, look on .Tony Gentile, AFP/Getty ImagesPope Francis and President Barack Obama.Susan Walsh, APPope Francis is greeted by four children as he arrives.Susan Walsh, APThe pope and the president greet the children.Saul Loeb, AFP/Getty ImagesPope Francis waves from his car, a Fiat, as he leaves Andrews Air Force Base.Saul Loeb, AFP/Getty ImagesPope Francis waves from the back of his Fiat after arriving from Cuba.Chip Somodevilla, Getty ImagesPope Francis departs in a Fiat after arriving from Cuba to the United States.Pool, Getty Images