Biden and Harris called into campaign all-staff call CNN 0 51 07.04 03:06 https://www.youtube.com/watch?v=M5v8G3W2eH4 + 4 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 3 Biden and Harris called into campaign all-staff call