Sen. Lindsey Graham says he has tested positive for COVID-19

Sen. Lindsey Graham says he has tested positive for COVID-19

Meanwhile, President Joe Biden faces challenges with shifting scientific consensus on the virus. SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc


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