And at least Ireland might have been poor, but they still were a country that still believed in the superiority of Western Civilization.
And importantly, during the time of Irish immigration, America had a distinct and critical need for labor. Our population could not take full advantage of the continents resources, or even fully populate our land mass. We needed people to come here. Conditions today are rather dramatically different - and we have no need whatsoever to import masses of people...from anywhere. If people can, on an individual basis, be an advantage, an asset to the nation, thats one things. To import masses for the very specific purpose of changing the demographic makeup of the country - for no reason but political advantage to the far left and those who wish to turn the country into a one-party dictatorship is another entirely.