The Lead With Jake Tapper

Pence on Biden: Must be "above the appearance of impropriety"; First witness in Ukraine probe testifies before 3 House Cmtes; Schiff clarifies after saying committee had no contact with whistleblower; Schiff: Trump's invitation to foreign leaders today "repugnant"; Giuliani says some of the conspiracy theory documents about Bidens, Ukraine Ambassador originated with him; Trump publicly urges another foreign power to investigate Biden; Trump: Ukraine & China should investigate Joe Biden & Son; Trump says Ukraine & China should investigate Bidens, despite no evidence of wrongdoing; Dem Rep Rose: Democrats should not cheer Trump impeachment; Pence insists Trump's Ukraine call was "appropriate"; Sources: Pence aides anxious, frustrated over Ukraine scandal; Pence echoes Trump's debunked claims about the Bidens; Pence claims he didn't discuss Biden with Ukrainian Pres; Trump says Ukraine & China should investigate Bidens, despite no evidence of wron