Our national monuments — and the Antiquities Act used to create them — are vital for preserving America's heritage and bolstering our economy.

On April 26, 2017 President Trump signed an executive order directing the Interior Department to conduct a review of approximately 27 national monuments, going back to 1996 designations, to recommend potential changes. This order targets the Antiquities Act, which permits presidents to declare federal lands, already owned by all Americans, as monuments in order to protect their historical, cultural or scientific value and overall national significance.

The law is essential to maintain the integrity of critical national and cultural resources including:

For over one hundred years the Antiquities Act has been used as a bipartisan conservation tool. With the exception of the Organic Act of 1916, no law has had more influence over the development of the modern National Park System and our other public lands than the Antiquities Act.

NPCA is opposed to proposals that would remove protections from national monuments or restrict presidential authority to proclaim national monuments.


  • More Than 1,000 Sent Letters to Congress

    Jul 2015

    NPCA supporters urged Congress to oppose amendments to the House Interior Appropriations bill that would dismantle the Antiquities Act.

  • More than 18,000 Take Action

    Nov 2015

    Park advocates urged Congress to oppose anti-environmental policy provisions and to preserve the laws that allow parks and their environment to thrive in their second century.

  • 1,700 Speak Up to Protect the Antiquities Act

    Apr 2017

    Park advocates sent messages to Congress urging them to oppose any bills or amendments that intend to undermine the Antiquities Act, or prevent the preservation of areas designated under the Antiquities Act.

  • More Than 21,000 Sent Letters to DOI

    Jul 2017

    Thousands of park advocates sent letters to Interior Secretary Ryan Zinke urging him to guarantee full protection for national monuments and all our public lands.

  • Nearly 14,000 Contact Congress on National Monuments

    Dec 2017

    Advocates sent letters to their members of Congress and urged them to put a stop to the Trump administration's attack on our national monuments and public lands.

  • Advocates Nationwide Took a Stand for National Monuments!

    Mar 2018

    More than 30,000 public lands advocates urged Congress to stand up to the Trump administration's order to slash protections for Bears Ears and Grand Staircase-Escalante National Monuments.

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