Who enforces or regulates the NEPA of 1969?

The National Environmental Policy Act (NEPA) of 1969 is primarily enforced and regulated by the Council on Environmental Quality (CEQ), which oversees federal agencies' compliance with NEPA procedures. Each federal agency is responsible for implementing NEPA within its own operations, ensuring that environmental assessments and impact statements are conducted for projects that may significantly affect the environment. Additionally, the public and various stakeholders can challenge agency decisions in court if they believe NEPA requirements have not been met.