Unfortunately for you, someone right at the very top of the Republican party that is in charge right now said something that blatantly contradicts your stated claim that this is an invented concern. Trump has also made comments about the 1965 change in immigration laws that makes it clear that the skin color of immigrants is more important to him than their legality, numbers or skill level.
So feel free to apologize for misrepresenting their opinions or defend your original claim, rather than pretend you said something else.