Karoline Leavitt: This is one of the worst political scandals America has ever seen

Former Trump senior advisor Kellyanne Conway weighs in after Republicans called for key Biden aides to testify on the concealment of the former president's decline. #FoxNews #Biden #Coverup #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 ...