Dr. Howard Dean, a physician who previously served as the governor of Vermont, told MSNBC on Sunday that Donald Trump suffers from mental illness and he is unfit to be president. “I’ve long believed the president is mentally ill,” Dean said as part of a panel discussion hosted by Alex Witt, Raw Story reported. “And I believe narcissism overcomes his ability to know, A, what’s good for the country, and B, what’s good for him.”