Why should the U.S. build a better wall on the southern border? House Majority Whip Steve Scalise offered a clear and candid rationale during a Fox News appearance this week, telling host Mark Levin that 10 known terrorists are captured each day trying to breach the border. U.S. Customs and Border Protections also informed Congress that 3,029 people were apprehended in one day this month — deeming the occurrence a crisis. Meanwhile, 21 percent of all potential migrants — an astonishing 158 million people — would like to come live in America if they could, according to a Gallup analysis,...