Some Democrats feel 'betrayed' after new books claim former President Joe Biden's inner circle went to great lengths to hide how he was aging. #foxnews #biden #usnews #politics Subscribe to Fox News! https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.com/ FOX News Channel (FNC) is a 24-hour all-encompassing news service delivering breaking news as well as political and business news. The number one network in cable, FNC