Joe, the whole point is that Trump didn't
only target Congresswomen who were born in other countries. He targeted Congresswomen
who were born in America, including one (Pressley) whose ancestry is
more American than Trump's.
If you want to compare
just Ilhan Omar to a hypothetical white Congressperson born in Canada, that's fine. (But former Michigan governor
Jennifer Granholm checks most of the boxes you brought up -- white, Democratic, born in Canada, now a US citizen, smart, feisty, extremely critical of Trump -- and not once has Trump told her to go back to Canada.
Debbie_Mucarsel-Powell has light skin, is a Democrat Congressperson, was born in another country, is now a US citizen, is smart and feisty and extremely critical of Trump, and Trump hasn't told her to go back where she came from, either.)
Trump has had many opportunities to tell white critics to go back to another country. And yet he's never, ever, ever done it -- not when the critic wasn't born in the United States (Ted Cruz, John McCain, Jennifer Granholm, Debbie Muscarsel-Powell, etc.), and not when the critic
was born in the United States.