There have been dozens and dozens of assassination attempts on POTUS, more than any other POTUS to my knowledge. He is under constant threat and that goes for his family also.
This man wore bulletproof vests to rallies early in his campaign. He is physically risking his life, those of his family, and all their wealth for our country.
Let that sink in.
He’s pretty much always armored I think. You see him wearing that heavy overcoat even when its not that cold.