Rpt: White House official expected to bolster Taylor's testimony that Trump pushed Ukraine to investigate the Bidens

12:28

Another witness is expected to corroborate Ambassador Bill Taylor's testimony that Trump pressured Ukraine to investigate the Bidens in exchange for military aid and there are new reports that the Justice Department is opening a criminal inquiry into its own Russia investigation. Lawrence O'Donnell discusses with Amb. Wendy Sherman, Evelyn Farkas, Joyce Vance and Matt Miller.