On this edition for Sunday, April 29, growing tribalism on both ends leaves little room for debate in the political discourse, and after years of open borders, there's backlash in Latin America...
========== >> Thompson: ON THIS EDITION FOR SUNDAY, APRIL 29: NORTH KOREA SAYS IT WILL GIVE UP ITS NUCLEAR WEAPONS IF THE UNITED STATES PROMISES NOT TO INVADE. THE GROWING TRIBALISM IN AMERICA. AND IN OUR SIGNATURE SEGMENT, THIS NATION HAS PUT JUST ABOUT EVERY GOVERNMENT SERVICE ONLINE NEXT ON PBS NEWSHOUR WEEKEND. FROM THE TISCH WNET STUDIOS AT LINCOLN CENTER IN NEW YORK, MEGAN THOMPSON. >> Thompson: GOOD EVENING AND THANK YOU FOR JOINING US. THERE ARE NEW DETAILS TONIGHT ABOUT WHAT IT WILL TAKE FOR NORTH KOREA TO DISMANTLE ITS NUCLEAR WEAPONS. SOUTH KOREAN OFFICIALS SAY KIM JONG UN WANTS THE UNITED STATES TO FORMALLY AGREE TO END THE KOREAN WAR, AND PROMISE NOT TO INVADE NORTH KOREA. SOUTH KOREA'S PRESIDENT...