Landmark Legal Foundation - Landmark Legal

We fight for Rule of Law.

We fight for liberty.

We fight for Rule of Law.

We fight for liberty.

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What We Do

Landmark Legal Foundation is a national non-profit public interest law firm that defends the Constitution and promotes liberty through legal advocacy and education. Our work is rooted in originalism, a philosophy in which the Constitution is interpreted according to the Founders’ intent. We believe that originalism anchors America to its founding principles, allowing freedom to endure the test of time.

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News & Updates

Landmark Submits Comments on EPA’s Endangerment Finding Reconsideration

February 22, 2026

Blog, News, Separation of Powers

Landmark filed a regulatory comment, urging the rescission of an Obama-era rule that dramatically expanded the power of the EPA and produced a myriad of burdensome regula...

Landmark Submits Comments on EPA's Endangerment Finding Reconsideration

EPA’s Final Rule Revoking the Endangerment Finding: A Major Step Toward Regulatory Reform

February 12, 2026

News

EPA’s Final Rule Revoking the Endangerment Finding- A Major Step Toward Regulatory Reform

Victory! Appeals Court Agrees with Landmark – Rules Congress can Defund Planned Parenthood

December 17, 2025

News, Blog

Landmark is fighting back against rogue judges seeking to nullify the 2024 election with rulings that vastly exceed their constitutional authority. In this case, a judge...

Victory! Appeals Court Agrees with Landmark and Rules that Congress can Defund Planned Parenthood

Court Signals Possible Overturn of Humphrey’s Executor v. United States Oral Arguments

December 16, 2025

Blog, News

Our founders intended the President to have control of the executive branch. Humphrey’s Executor is a 1935 Supreme Court ruling that undermines this principle by preventi...

Court Signals Possible Overturn of Humphrey’s Executor v. United States Oral Arguments

Landmark urges NY Appeals Court to overturn Trump’s criminal conviction

November 3, 2025

Blog, News, Rule of Law

Landmark is asking the New York Appeals Court to overturn Donald Trump criminal conviction. Justice Juan Merchan's jury instructs denied President Trump his right to a un...

Landmark Files Brief in NY Appeals Court Defending President Trump

Landmark Pushes to Overturn Humphrey’s Executor, Restore Presidential Power

October 27, 2025

Blog, News

Landmark Pushes to Overturn Humphrey’s Executor, Restore Presidential Power

SCOTUS Hears Oral Arguments in Crucial Voting Rights Act Case

October 18, 2025

Blog, Election Integrity, News

We argued that the Supreme Court should reject the court-ordered redistricting in Louisiana, which forced the state to create a second majority-minority district. We argu...

SCOTUS hears oral arguments in crucial Voting Rights Act case

Supreme Court Poised to Uphold Candidate Standing in Bost v. Illinois

October 12, 2025

Election Integrity, News

When Congressman Mike Bost attempted to challenge Illinois’ practice of counting ballot received after election day, his suit was initially dismissed for lack of standing...

Supreme Court Poised to Uphold Candidate Standing in Bost v. Illinois

Landmark battles NEA!

August 22, 2025

Blog, News, Separation of Powers

Landmark defended the Trump administration’s efforts to rid our schools of DEI. The National Education Association asked a judge to vacate a letter reminding schools that...

Landmark fought to stop a lawsuit from the Mexican government which attempted to hold Smith & Wesson liable for crimes committed by drug cartels. In a unanimous decis...

What We Do

News & Updates

Landmark Submits Comments on EPA’s Endangerment Finding Reconsideration

EPA’s Final Rule Revoking the Endangerment Finding: A Major Step Toward Regulatory Reform

Victory! Appeals Court Agrees with Landmark – Rules Congress can Defund Planned Parenthood

Court Signals Possible Overturn of Humphrey’s Executor v. United States Oral Arguments

Landmark urges NY Appeals Court to overturn Trump’s criminal conviction

Landmark Pushes to Overturn Humphrey’s Executor, Restore Presidential Power

SCOTUS Hears Oral Arguments in Crucial Voting Rights Act Case

Supreme Court Poised to Uphold Candidate Standing in Bost v. Illinois

Landmark battles NEA!

Are President Trump’s Strikes on Iran Legal?

SB1 Stands: U.S. Supreme Court Affirms Tennessee Law Banning Gender Surgeries for Children

Presidential Use of the National Guard in Emergencies: The Rodney King Riot Example

Supreme Court Stops Mexico’s Lawsuit to Bankrupt the American Firearms Industry

Supreme Court Allows Trump to Revoke Biden-era Protections for Venezuelan Migrants

Supreme Court Temporarily Permits Trump to Fire Two “Independent” Agency Heads

How Did We Get Into This Universal Injunctions Mess?

Supreme Court Seems Open to Limiting Universal Injunctions, But Skeptical of Curbing Birthright Citizenship

David Souter, 1939-2025

Supreme Court Weighs Parental Opt-Out Rights on Sex and Gender Lessons in Schools

Landmark Files Brief With DC Circuit Court Of Appeals In Trump Criminal Contempt Case

SCOTUS Sides with Immigrant on Voluntary Departure Deadline

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