Erin Burnett Outfront

Trump showing increasing signs of frustration over impeachment as he repeatedly slams Pelosi on Twitter; Trump stewing at Mar-A-Lago over Senate trial being in limbo; Trump agitated over uncertainty in Senate trial; Biden says he would defy subpoena in Impeachment trial; Source: White House working on list of replacements for Secretary of State as GOP pushes Pompeo to run for Senate; New York Times: Newly obtained video shows seals calling platoon chief "Toxic"; Trump championed chief as "Great Fighter"; Bernie Sanders takes on Joe Biden's record; Sanders claims he is in "The Best Position to Defeat" Trump; Top Democrats return to campaign trail for final push to Iowa; Sanders calls out Biden: "Trump will eat his lunch"; Democratic Congresswoman to 2020 Candidates: "You actually have to campaign Black people as well"; Battleground organizers using prayer, persuasion to get Black voters to the polls in Wisconsin; Trump Campaign, Democrats court Black vote