The No Hostile ONLOOKERS Act prohibits the intelligence community from funding research, development, or technical support at National Laboratories that allow people from countries deemed "at risk" to access their facilities, information, or technology. The bill defines "countries of risk," "covered assignees," and "covered visitors" by reference to existing definitions in the Intelligence Authorization Act for Fiscal Year 2025. Intelligence agency heads can waive this prohibition on a case-by-case basis if they certify that the specific research is not vulnerable to foreign intelligence collection and submit their justification to congressional intelligence committees. The legislation applies to all elements of the intelligence community and affects their funding relationships with the Department of Energy's National Laboratories, which conduct sensitive research in areas like nuclear weapons and advanced technologies.