This legislation establishes a new restriction on access to facilities operated, owned, or leased by the Department of Energy . Its primary purpose is to prohibit individuals who are not citizens of the United States from entering or accessing these sensitive sites. However, the bill includes a specific exception for citizens of certain allied nations. This exemption applies to individuals from Australia, Canada, New Zealand, and the United Kingdom, collectively known as the "Five Eyes" countries. The prohibition is set to take effect 60 days after the bill's enactment, requiring the Secretary of Energy to update all relevant regulations and procedures accordingly within that timeframe.