CNN’s MJ Lee explains why Democratic lawmakers are worried about Joe B… CNN 0 76 06.29 01:09 https://www.youtube.com/watch?v=v5gYzCjpZM8 + 12 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 11 CNN’s MJ Lee explains why Democratic lawmakers are worried about Joe Biden’s debate performance.