Invar observed (correctly) above:
"NO.
We are no longer the same people they were and we do not share the same values and principles they did."
At the time of World War II, diversity WAS NOT "our strength".
By and large, it didn't exist.
The overwhelming majority of America was white of Western European heritage, with very few Hispanics.
Yes, there was a black population, but it was largely marginalized with little impact on national policy or culture.
No more.
Although whites still hang onto a demographic "majority" they have become almost irreconcilably divided, at least in larger urban areas vis-a-vis "the hinterlands".
Brown-skinned non-English speakers of non-Euro heritage have flooded in, driving out the whites in many areas. Look at California and New Mexico, where whites are now the minority. Even Texas faces a similar situation twenty years' hence. Florida will soon be swamped with Puerto Ricans fleeing their homeland, forever changing the political demographics of that state.
And to make matters worse, after waging a cold war to defeat communism in the Soviet Union -- a struggle in which The West succeeded -- we are LOSING the same battle at home, as our institutions (particularly education) have become infiltrated with communist/leftist thought by an legion of conspirators/fellow travelers.
We have become the house divided.
I don't see that house unifying again without catastrophe or blood.
The saying goes... "borders, language, culture".
To that I would add "ethnicity" as well.
But it's not the fault of the non-Euros who have swamped us.
They behaved as we should expect them to.
The fault.... is ours. No one else's.
We could have protected what we had.
We could have driven out the communists in government, have prevented the leftist takeovers of the media, culture and education, and prevented the invasion by hordes "not like us".
But we didn't, excusing all this in the name of "equality" and "tolerance".
And now, we must pay for our foolishness.
Why is it that only the white/Euros of the world remain so naive about human nature?