Tiffany Justice has been fighting for years to keep biology and gender in tandem, rejecting progressive arguments that sex is merely a social construct and that there are dozens of genders.

Co-founder of Moms for Liberty, Justice is now a Heritage Foundation Visiting Fellow on Parental Rights.

And after listening to the U.S. Supreme Court hearing on a parental rights case on Tuesday, she joins the NHJournal podcast to talk about the trend toward protecting girls sports and spaces from biological males.

“The tide is turning on this issue. And the science, obviously, is with us,” Justice told the NHJournal podcast.

ALSO: Some rank punditry from your host, Michael Graham of NHJournal, on the latest Granite State poll from the University of New Hampshire Survey Center, and why, despite Trump's struggles, Democrats embrace "one weird trick" that keeps Trump in the game.

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Tiffany Justice: 'The Tide is Turning' on Protecting Girls Sports and Spaces