No, we certainly were NOT asked in the mid-1960s when Robert Kennedy convinced Congress to change the laws & admit more third-world immigrants so we could have more "diversity." Then the "family reunification" act made it virtually certain that few European *Caucasian* immigrants could come to the US. They obviously did not have the large extended families and thus couldn't bring in every cousin, sibling, niece, nephew etc.
Our mistake was in ripping up countries by destabilizing their governments and rather than trying to help them rebuild a workable society in their own country, we brought too many of them here.
What really ticks me off is that we haven't assimilated the blacks yet. There was plenty of work and progress to help them better themselves, but we gave up on them as unable to learn and brought others in instead.
I'm just rambling here, but I've watched this country go downhill in every way except economically and it is too late to turn back the clock. I try not to resent these people but I look at my own and wonder how on earth they will be able to compete with the "foreigners" who get all kinds of breaks our people don't.
Another problem no one has touched on is that these people flock to the cities because they can't afford to buy farms. Many of them would lack the knowhow of American farmers anyway.
What happens if the bubble eventually breaks?
The only solution is to keep artifically stimulating the economy. The economy now takes precedence over people. Naturally the two are intertwined but the almighty dollar rules.