Today's discussions:Former US attorney Joyce Vance, MSNBC contributors Kim Atkins and John Heilemann, and NBC's Peter Alexander on the revelation that White House Press Secretary Sarah Huckabee Sanders had been interview by the Special Counsel team;Former US attorney Joyce Vance, MSNBC contributors Kim Atkins and John Heilemann, and NBC's Peter Alexander on Trump announcing a national emergency to fund his border wall;Eyewitness on the scene of a workplace shooting in Aurora, Ill., describes the scene at the Henry Pratt Company where a gunman was apprehended and two victims were reportedly taken to the hospital.