Erin Burnett Outfront

Trump: I don't know "Send her back" chant can be stopped; Trump holds first rally since "Send her back" chant debuted; comes as near-majority of House Democrats back impeachment inquiry; House Democrats backing impeachment inquiry grows to 117; Biden says he's "feeling good" after debate despite multiple gaffes and repeated attacks by his rivals; Biden "feeling good" despite heated debate, relentless attacks; Charlamagne Tha God after Gabbard attacks Harris on marijuana: "I didn't think it was a genuine moment"; Charlamagne Tha God: "Low-hanging fruit" to attack Harris for pot comments on his show; Charlamagne Tha God: Harris "Was terrible on stage last night"; Charlamagne Tha God: "Booker won the debate last night"; Biden calls criticism of Obama legacy during debate "Bizarre"; Democratic candidates hit Obama legacy as they attack Biden; Biden accused of trying to have it both ways on Obama's legacy: