"Here you have the POTUS calling for something obviously unconstitutional and all the left can do is scream racism like a broken record."
You and neoman are illustrating why there is real danger for the democrats in the upcoming election. You are correct that they "scream racism" and argue a subtle distinction between racism and perhaps xenophobia. Neoman is correct that they are pretty much the same thing in this regard. In other words, y'all are arguing a distinction without much of a difference.
Trump has a strategy. Here is what the democrats should do:
What they (the Democrats) should be hammering on is that he has taken on women in government. WOMEN, WOMEN, WOMEN. If they can peel off some of the white women who voted for him the last time he will lose and loose badly. He may even take the Senate with him. Mitch McConnell is in trouble in his own state because a woman is opposing him.
Secondly. Trump has no intention of running against the democrat's nominee. It is doubtful he could beat any one of them in the next election. Even the gay guy would give old him a run for the money. Trump's plan, out there for all to see, is to run against AOC and the far(ish) left of the democratic party. He will not talk about Warren (for example) except to childishly make fun of her. He will always and at every opportunity turn the conversation to AOC, the other three women, (the immigrant especially) and Pelosi. And unless the democrats make this about WOMEN, WOMEN, WOMEN they will lose and maybe lose badly.
Where is Trump vulnerable? He sucks with WOMEN. He has a past and now he has a current vulnerability. Every time he hammers on a woman legislator the democrats ought to scream "misogyny". They should shout, "He HATES strong women". "He can't stand WOMEN in power." They do not need to scream racism because they already have the votes of the people who much care about this.
Because of the democratic party response to this current kerfuffle I predict that Trump will win the 2020 election. The democrats are at each other's throat rather than presenting a united front in DEFENSE OF WOMEN. This is pathetic. Pelosi ought to know better. She is arguably the most experienced politician in government about now.
This discussion should have nothing to do with race or ethnicity. It ought to be framed as an issue about how Trump dislikes women in power. The power of this argument is not only that it hits Trump where he is vulnerable, but also carries to all of the down ticket elections too. The thing that Trump ought to fear like the plague is not loosing the popular vote. He lost that badly last time. He ought to fear losing the woman vote. Without them he will look like Goldwater in 1964.