A conservation group is launching a $1 million television and radio advertisement campaign targeting three House Republicans over President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s decision to shrink monument protections in Utah.

The Western Values Project's ads will go after Reps. Greg Walden Gregory (Greg) Paul WaldenTrump order on drug prices faces long road to finish line Ignore the misinformation: The FDA will ensure the safety of any COVID-19 vaccine Hillicon Valley: Trump backs potential Microsoft, TikTok deal, sets September deadline | House Republicans request classified TikTok briefing | Facebook labels manipulated Pelosi video MORE (R-Ore.), Jaime Herrera Beutler Jaime Lynn Herrera BeutlerCentrist Democrats 'strongly considering' discharge petition on GOP PPP bill This week: House returns for pre-election sprint GOP Rep. Jaime Herrera Beutler advances in Washington primary MORE (R-Wash.) and Martha McSally Martha Elizabeth McSallyTumultuous court battle upends fight for Senate Grassley, Ernst pledge to 'evaluate' Trump's Supreme Court nominee The Hill's Campaign Report: Biden goes on offense MORE (R-Ariz.).

The ads tell viewers about Trump’s executive order shrinking the Bears Ears and Grand Staircase-Escalante National Monuments in Utah, and highlights potential public land policy changes in the three states it is set to air in.

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The group calls on viewers to tell Walden, Beutler and McSally to “stop the attacks on public lands because your American birthright is not for sale.”

The ads are some of the first to come out since Trump’s Dec. 4 announcement shrinking Utah’s monuments. Trump’s decision, while popular with conservatives, has angered environmentalists and public lands activists who warn it could open the door to more development on land owned by the federal government.

Interior Secretary Ryan Zinke Ryan Keith ZinkeTrump extends Florida offshore drilling pause, expands it to Georgia, South Carolina Conspicuous by their absence from the Republican Convention Trump flails as audience dwindles and ratings plummet MORE has recommended Trump shrink two more monuments and change land management practices on several others.

Western Values Project polled voters in the three targeted districts, finding majorities of respondents oppose the Utah decisions.

“Public lands are a cornerstone of the way of life in communities across the West. Whether you live in Arizona, Washington, or Oregon, the administration’s plan to gut protections for public lands is wildly unpopular,” Chris Saeger, executive director of the Western Values Project, said in a statement.

“This isn’t about politics or political parties. It’s about supporters of our public lands, from hunters and anglers to conservationists standing shoulder to shoulder with our leaders in Congress and protecting our public lands for future generations.”