The US government should definitely use their power to stop projects that could harm endangered species. If they don't, why do we have an endangered species list? These species need help protecting themselves from extinction. In this case, if the government can help, why not? I don't think this would be overstepping authority.
I think that environmental success is key to happier, healthier world, and therefore the US government should use their power and resources to stop projects that could harm endangered species. Instead of simply shutting down projects that may be necessary, the government should look for alternative solutions so that the people don't suffer for the sake of the animals and vice versa.
The US government use their power to stop projects that could harm endangered species because the environment is something we need to protect. If unchecked, businesses will engage in practices that can hurt the environment. The government should use its power to prevent projects that could harm endangered species in order to keep the ecosystem in balance and be a voice for the environment, something we live in and are all responsible for.
The United States government should use its power to protect endangered species because the eradication of animal life will mess up the entire ecosystem. We all might hate bee stings but we sure need bees to pollenate flowers so they will grow properly. One hand washes the other amongst the animal kingdom.