On the eve of Election Day, conservative commentator Ann Coulter suggested that if only people with four U.S.-born grandparents voted, Donald Trump would win by “a 50-state landslide.”

Coulter’s critics were incensed, saying her comments were similar to racist Jim Crow laws that used “grandfather clauses” to stop blacks from voting.

If only people with at least 4 grandparents born in America were voting, Trump would win in a 50-state landslide. — Ann Coulter (@AnnCoulter) November 8, 2016

But by Coulter’s argument — as many, many people on Twitter pointed out — even Trump would be prohibited from voting for himself.

As The Washington Post’s Philip Bump wrote: “His mother was born in Britain, his grandfather in Germany (though the Trumps liked to tell people he was actually Swedish).”

Just one problem with that… Trump himself wouldn't be able to vote, much less run for president.#Drumpf https://t.co/GQu8cF85ps — Trevor Noah (@Trevornoah) November 8, 2016

But then Trump couldn't run, since his mom and paternal grandparents weren't born in the US. So, um, yeah. https://t.co/7Uxwnuqk0Q — Jake Tapper (@jaketapper) November 8, 2016

In fact, most of the family members on stage for a potential Trump victory speech wouldn’t be allowed in the voting booth either, Bump wrote.

“That Trump’s mother was born overseas means that none of his kids could vote either, if they were registered to vote. That Trump’s first and third wives were also born overseas means that none of Trump’s current grandchildren and none of young Barron Trump’s eventual progeny would be allowed to vote.”