President Donald Trump used the opportunity of the White House Easter Egg Roll to address some of his youngest supporters about one of his signature policy initiatives: building a wall on the southern U.S. border. “Oh it’s happening, it’s being built now,” Trump told a group of children as he colored pictures with them on Monday in celebration of Easter on the White House’s South Lawn. “Here’s a young guy just said ‘keep building that wall.’ Do you believe it?