The main purpose of this legislation is to simplify and expedite the process for energy and mineral activities on certain federal lands by exempting these actions from the requirements of the National Environmental Policy Act (NEPA) of 1969. NEPA typically requires federal agencies to assess the environmental impacts of their proposed actions, which can lead to lengthy reviews and delays. This bill aims to streamline the approval process for energy and mineral projects, making it easier for companies to obtain the necessary permits and leases.