Is the Endangered Species Act (ESA) necessary to protect endangered species, or should states have the ultimate authority here?

The Endangered Species Act is one of several Federal laws governing the environment and wildlife covered in your book. Is the ESA necessary to protect endangered species, or should states have the ultimate authority here? Are the effects sometimes too far-reaching, or are these results and penalties equitable when considering the effect on the environment? Please respond to the above question with at least 150 words.