Okay kiddo, let me tell you a story about something called "Kleppe v. New Mexico".
A long time ago, there was a man named Kleppe who worked for the government. He was in charge of making sure that wild animals were protected and taken care of.
One day, the state of New Mexico decided they wanted to take over some of the land where these animals lived, and they wanted to make their own rules about how to take care of them. Kleppe didn't like that idea, because he thought the animals might get hurt if the state made rules that weren't as good as the rules the government had already made.
So Kleppe went to court, and he argued that it was the government's job to protect these wild animals and that the state of New Mexico couldn't just take over and make their own rules.
The court agreed with Kleppe and said that the government had the power to protect wild animals, and the state of New Mexico couldn't interfere with that. Basically, the court said that the government's power to protect wild animals was more important than the state's power to make their own rules about how to take care of them.
And that's the story of Kleppe v. New Mexico!