Agonizing 'limbo' awaits migrants seeking legal U.S. entry

Much of President Trump’s rhetoric over immigration focuses on the people crossing the U.S.-Mexico border illegally. But what is the situation for the thousands who wait on a daily basis to enter through legal means? In the second installment of our two-part series, Amna Nawaz crosses the border into Mexico to see firsthand how the existing U.S. immigration system “isn’t working for anyone.”