Biden tries new line of attack against Trump: Mocking his age CNN 0 119 02.28 03:22 https://www.youtube.com/watch?v=qJ_PPrnzrRc + 14 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 18 Biden tries new line of attack against Trump: Mocking his age