@layman,
Notice that the Black Caucus sends Trump a proposal that lottery immigrants must come only from certain countries.
They mean the best from those countries, right?
Hell, no! They mean those selected absolutely randomly, with no regard whatsoever for "merit."
If you are forced to select ONLY on the grounds of country of origin, without regard to individual merit, then you can only base your selection on the country, not individual citizens.
If that's your only way of choosing, then why would you restrict the list of acceptable countries to "shitholes," Trump asked.
I still aint heard no good answer to his question.