To grasp the Trump phenomenon, you MUST understand that Trump is selling nostalgia. Specifically, he's selling nostalgia for the days when America used to "win" and make "good deals."
This is why his slogan is "Make America Great Again," not just "Make America Great." The whole narrative is premised on America's former greatness that has been lost because of inept leadership.
It's precisely **because Trump is selling nostalgia** that we should take very seriously anything he says that appeals to "the old days." The Old Days are what America used to be, before poor leadership diminished her greatness. The Old Days are what we must return to, or we will continue to suffer.