SEPARATED: CHILDREN AT THE BORDER – NEW DOCUMENTARY (NR) What's happened to the more than 2,000 families who were separated after crossing the U.S. border unlawfully in 2018? How did immigration policy in America reach this point? It also traces why some say what happened on immigration during the Obama years would help lay the groundwork for what the Trump administration did next. Frontline examines immigration policy under both the Trump and Obama administrations, the origins of "zero tolerance." The film traces how the U.S.'s immigration policies involving children have played out over the years--and why, even for those families who have now been reunited, the scars remain.