- Read through the original federal Endangered Species Act (see attachment). Share with the class three things that you learned, were surprised to find, or that caught your attention. Then, determine if there have been any major federal amendments to the original ESA. Share the highlights of one or more amendments. Finally, research a state that has enacted its own ESA or state equivalent and share the state and anything special about this specific ESA. This would be a great time to determine if your home state has deferred to the federal law or enacted a separate law.