Costas called for Biden's withdrawal before the debate. Hear what he t… CNN 0 136 07.14 05:53 https://www.youtube.com/watch?v=6V45fS06UEA + 32 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 18 Costas called for Biden's withdrawal before the debate. Hear what he thinks now