In all honesty I think there's a decent chance this is a reaction to @dandrezner's President Toddler thread.
As I've said before: I have a heck of a trade deficit with Target. They never come to my house to buy Halloween decorations from me.
"I rely on them, it's not in our country."
"Ah. But that's what I'm talking about."
"But you didn't prove vanilla is the best."
"I didn't have to, I proved that you're wrong."
(The film is Thank You For Smoking.)
Which I think is another one of Trump's childish worldview elements. The opposite of an open border is closed.
"Everybody leaves. Everybody. People leave." might be one of the most unintentionally sad statements he's ever made.
And the Doctor herself said "We're stronger together."