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RL31654Appropriations

The Endangered Species Act: A Primer

Federal & State Law Editorial TeamLast reviewed: July 2026
March 31, 2005

Summary

The Endangered Species Act (ESA)1 receives significant congressional attention. The associated power and reach of its comprehensive protection for species identified as endangered or threatened with extinction has ignited concern that there be appropriate bounds on this power. The following discussion provides an overview and background on the various features of the ESA that contribute to its stature and yet spark an ongoing debate over its implementation.

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Note: CRS reports are prepared for Members of Congress and their staffs. This summary is provided for informational purposes and does not constitute legal advice.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.