This election year, a question roams in many voters' minds: Is there an “invasion” on our southern border? The answer from plenty of the people who live and work there is no. To understand what is really going on at the border, we travel to Sasabe, a tiny community in a remote area of the Arizona border with Mexico, to find out how human-smuggling battles within the Sinaloa cartel turned it into a ghost town. We also visit a pop-up camp set up on the U.S. side of the border fence. There, volunteers help thousands of asylum seekers from all over the world who turn themselves into the Border Patrol every day.