a lawyer for the whistle-blower sending a cease and desist letter to the white house demanding that president trump stop attacking his client. and "the times" reports ukraine's president planned to announce an investigation of biden as president trump wanted during a cnn interview in september. but it was scrapped when news of the whistle-blower complaint and alleged quid pro quo broke. >> joining us now, 2020 democratic presidential candidate andrew yang. mr. yang, i hope you can hear me. i know we were having audio problems. can you hear me? >> yeah, loud and clear. thank you, john. >> the robots are working for both of us this morning. i appreciate that. so if i can get your reaction to this really big news, which is that michael bloomberg and his $50 billion filing paperwork to enter the presidential race. what do you think of that? >> well, i'm friendly with mike. he's a great philanthropist, was