The irony is that with Trump and the political realignment he represents, the culturally conservative immigrant block may well swing behind conservative American factions rather than the woke worldview of marxists that have been such a blight in their own homelands. Don't screw that up. I'm not saying illegal immigration isn't a problem or that we should have an open border, just that the border is a symptom more than a root cause. If you shut the border and declare victory, I guarantee it will be for nought, like the conservatives who thought striking down Roe v. Wade was a final victory rather than merely an opportunity to effect real change.
All immigration is the problem, that is why JFK ran on and fought for the democrats implementing a replacement immigration policy that would overrun and defeat the American people.
I come from the WASPY bloodlines that go back to the Mayflower. I'm not an Ivy league lefty. You are smearing with too broad a brush. I suggest narrowing to just the Ivy League crew. They are a peculiar subset.