According to folks like Oliver Stone and Lyndon LaRouche, this is why the CIA killed JFK. JFK didn’t want to put US troops in Vietnam (even though he did have Special Forces and USAF) in country in 1963.
While I do not believe most conspiracy theories, I want President Trump to wear a vest and pack heat everywhere he goes!
To top it off he was also threatening to abolish the Federal Reserve from what I understand. Double motives there.