Anthony Scaramucci worked with Donald Trump for three years, both on his campaign and as White House Communications Director, and he has serious questions about his mental health.

"If you look at a whole pattern of speech and deterioration of his syntax — I'm not a psychologist so I'm not going to clinically evaluate him — (but) as a person, as a voter, you're saying the guy is obviously in mental decline," Scaramucci said on CNN's "New Day."