This legislation establishes a clear prohibition against the United States invading any North Atlantic Treaty Organization (NATO) member country or associated territory. Specifically, it mandates that no Federal funds can be appropriated or made available for such an invasion. Furthermore, the bill explicitly states that no officer or employee of the United States may take any action to execute an invasion of these protected territories. The prohibition extends to any territory where Article 5 of the North Atlantic Treaty, also known as the Washington Treaty, applies, including those described in Article 6. This measure is designed to reinforce the principle of collective defense among NATO allies by preventing the U.S. from initiating hostile actions against them.