Sen. Cory Booker on Julián Castro's jab at former VP Joe Biden's memory: "Castro has some really legitimate concerns about, can he be someone in a long grueling campaign that can get the ball over the line? And he has every right to call that out." #DemDebate pic.twitter.com/rMvlolVf0j

— OutFrontCNN (@OutFrontCNN) September 13, 2019