Yes, though he never would have thought of it in those terms. He would have thought of it more that he was in the greatest American tradition of accepting immigrants. Note that he sometimes would quote the text on the base of the Statue of Liberty.
He was a bit of an idealist. He also wanted to shut down the Federal Reserve, as an example of his idealism.
He wasn’t an idealist, he was an absolutely corrupt individual, who wanted to replace the American voters with immigrants that would vote democrat, he knew his voting data.
I agree with Reagan’s private evaluation of him in 1960.
I also know that his election is what killed America, if Eisenhower’s veep had won an election that is widely seen as having been stolen by JFK, then the 60s and the Vietnam war, federal union bargaining, and the resulting state take overs by unions, the Bay of Pigs, the emptying of the mental hospitals to the streets, and so much of what came from his administration, and his remaining goals that came to fruit under his veep, LBJ.
Without JFK the 1960s would have been pretty normal, and we would have survived as a nation.