Trump holds better position, but Omar played her card better.
From American perspective, when a white man in power says to any minority/minority group "you can go back to where you came from", that man has stained himself permanently with racism. Trump was already accused of being a racist, but the evidence was more subtle, but this time, he really gave those people calling him a racist the full evidence they were looking for. Even Republicans were mostly silent in response to that comment, cuz they know he crossed a line.
Trump crossing some serious red lines is sort of good for me, cuz that will make it more likely that Trump will lose next year. I think he's rocked the boat too much. The republicans who voted him in last year but wont do the same next year wont tell us so.