Mr. Trump's supporters in those Rust Belt states don't really care about international matters.  All they will take away from the Saudi trip is the message they'll be fed that the President signed deals to create American jobs.  They don't care about the Saudi human rights situation or that the Saudi's fund terror groups (hey, wasn't bin Laden a Saudi?).

There's no bar lower than the lowest common denominator.  That's the audience and Mr. Trump did well.