Ambassador Jim Sasser, who attended the Dr. Jill Biden event was the former ambassador to China and is an expert on the Chinese government and understands the Chinese better than the current President. 

He told the ambassador it was a pleasure and an honor meeting him and appreciated him taking a picture with him.  Before being an ambassador he served as a US Senator from Tennessee where he and the Biden’s’ became good friends. I am proud of to have been at this wonderful event with these two great leaders.