He’s afraid of someone poisoning him.

I’m not joking. He probably should be too, he makes enemies of everyone he’s ever come in contact with. Including the people in this photo. He will use them until he has no more need for them, and then he will throw them under the bus, or ditch them, or now use one of the many arms of the federal government that will be at his whim to bury them. That’s what he does, he uses people and then disposes of them.