This joint resolution would restrict the President's ability to withdraw the United States from NATO by requiring either approval from two-thirds of the Senate or an act of Congress before such action could take place. Currently, the President has significant unilateral authority over treaty matters, but this bill would require congressional consent comparable to what is needed to ratify a treaty in the first place. The legislation also mandates that the President consult with and notify the relevant congressional committees at least 180 days before taking any action to suspend, terminate, or withdraw from the NATO treaty, and it authorizes Congress to pursue legal action through the Senate Legal Counsel or House General Counsel to challenge any attempted withdrawal that violates these requirements. The bill was introduced in September 2023 with bipartisan support from members of both parties and was referred to the House Foreign Affairs and Rules Committees. No specific funding is authorized or appropriated by this resolution, which functions primarily as a constraint on executive power rather than an appropriations measure.