Controversial centerpiece of Ariz. immigration law remains in place

Up host Chris Hayes and his guests - Rep. Peter Welch, D-Vt.; Demos’ Heather McGhee; PBS host Maria Hinojosa; and Salon’s Glenn Greenwald – cover the Supreme Court's ruling on Arizona's immigration statute, SB 1070, that left in place the most ... more Duration: {{video.duration.momentjs}}