"Never heard of him": Trump retorts to a DHS official who endorsed Biden

• "He was one of the most unfocused and undisciplined senior executives I've ever encountered," Taylor said.

What he's saying: "Many thousands of people work for our government. With that said, a former DISGRUNTLED EMPLOYEE named Miles Taylor, who I do not know (never heard of him), said he left & is on the open arms Fake News circuit. Said to be a real “stiff”. They will take anyone against us!"

• In an interview with CNN on Monday, White House senior adviser Jared Kushner called Taylor a "nice kid" but suggested that he was ineffective in his job.