President Trump's idea of good and bad immigrant countries has a historical precedent

Sen. John McClellan, D-Ark., asked whether opening the United States to immigrants from Africa would lead to "still more ghettos and thus more and more acts of violence and riots?"
Sen. John McClellan, D-Ark., asked whether opening the United States to immigrants from Africa would lead to "still more ghettos and thus more and more acts of violence and riots?"