Land of the Free that excluded blacks and women

As well as the indigenous and non-landowners.

U.S. oligarchs HATE competition. They conned the rubes of 1776 to fight the British monarchy so they could have a monopoly on graft in the colonies, the U.S. finally got pulled kicking and screaming into WW1 and WW2 because they hated the competition from Germany et al, and not out of any love for Europe. The support for Hitler among the U.S. ruling class was high and well documented, including Prescott Bush.

more reliable indicator of low intelligence

I would add inability to use proper punctuation to that criteria.

I seriously doubt the intelligence of anyone still traveling to the USA. I hope whatever project he is working on is not critical.

Hitler specifically called the U.S. treatment of indigenous people an inspiration, and used it as his basis for treating Jews, gays, communists, intellectuals, and all the other victims of the Third Reich. tRump and his Fourth Reich is just coming full circle.