Since its passage in 1973, the U.S. Endangered Species Act has been the strongest law to prevent species extinctions in the United States, and has served as a model of conservation policy to other nations.
![frog northern leopard Columbia Basin Bulletin](https://columbiabasinbulletin.org/wp-content/uploads/2022/10/frog-northern-leopard.jpg)
Since its passage in 1973, the U.S. Endangered Species Act has been the strongest law to prevent species extinctions in the United States, and has served as a model of conservation policy to other nations.