NATO UP Act

Bill Number

S. 3624

Origin Chamber

Senate

Congress

119th Congress, Session 2

Policy Area

International Affairs

Status

Introduced

Latest Action

2026-01-13: Read twice and referred to the Committee on Foreign Relations.

Last Updated

2026-02-11T14:24:43Z

AI-Generated Summary

Purpose of the Legislation

The NATO Unity Protection Act (S. 3624) aims to safeguard the unity and effectiveness of the North Atlantic Treaty Organization (NATO) by prohibiting the use of U.S. government funds for any actions that would assert control over the sovereign territory of a NATO member state without proper authorization. It underscores NATO's role in U.S. national security and seeks to prevent U.S. actions that could fracture the alliance.

Key Provisions

• Findings (Section 2): Congress declares that NATO's strength is vital to U.S. security; any unauthorized U.S. occupation or takeover of a NATO ally's territory would breach the United Nations Charter and the North Atlantic Treaty (1949); such actions could weaken or dissolve NATO, benefiting adversaries like Russia and China while harming U.S. interests.
• Limitation on Department of Defense Funds (Section 3): Prohibits using any DoD funds in any fiscal year to blockade, occupy, annex, conduct military operations against, or assert control over a NATO member's territory, unless authorized by that member state or the North Atlantic Council (NATO's principal political decision-making body).
• Limitation on Department of State Funds (Section 4): Similarly restricts State Department funds from being used to develop, support, or implement plans for such actions against NATO territory, with the same authorization exception.
• Rule of Construction (Section 5): Clarifies that the Act does not limit U.S. rights to defend itself or a NATO ally from an armed attack or a credible imminent threat of one.

Significant Changes to Existing Law

This bill introduces new restrictions on the expenditure of appropriated funds for the Department of Defense (DoD) and Department of State, specifically targeting unauthorized actions against NATO allies. Previously, no such explicit statutory limits existed to prevent U.S. military or diplomatic efforts from encroaching on NATO sovereign territories in non-defensive scenarios. It leverages Congress's constitutional power over appropriations (the "power of the purse") to constrain executive branch actions in foreign policy.

Potential Impacts

• On Government Agencies: The DoD and State Department would face strict financial barriers to planning or executing operations against NATO allies without approval, potentially requiring enhanced coordination with NATO bodies and internal reviews of foreign policy initiatives.
• On Citizens: U.S. citizens could benefit indirectly through preserved national security via a stronger NATO alliance, reducing risks of global instability that might lead to conflicts or economic disruptions.
• On International Relations: Reinforces U.S. commitment to NATO, deterring actions that could alienate allies and signal reliability to partners; it may strain relations with non-NATO adversaries like Russia or China by countering their potential exploitation of alliance divisions.

Main Stakeholders Affected

• U.S. Government Entities: Primarily the DoD and State Department, which must comply with fund restrictions.
• NATO Member States: All 32 NATO countries (including the U.S.), protected from unauthorized U.S. interference in their sovereignty.
• U.S. Citizens and Taxpayers: Impacted through funded national security policies and potential avoidance of alliance-weakening conflicts.
• Adversaries: Nations like Russia and China, whose strategic interests (as noted in findings) could be undermined by a more unified NATO.

Notable Legal, Constitutional, or Political Implications

• Legal: Establishes clear, enforceable limits on fund use, potentially leading to legal challenges if executive actions test these boundaries; the authorization exceptions align with international law under the UN Charter and NATO Treaty, emphasizing collective defense (Article 5 of the Treaty).
• Constitutional: Affirms Congress's role in overseeing foreign affairs via appropriations, balancing executive powers in military and diplomatic decisions without infringing on inherent defense rights.
• Political: Signals bipartisan support for NATO (introduced by Senators Shaheen and Murkowski), potentially boosting U.S. credibility abroad amid geopolitical tensions; it could influence future appropriations bills and debates on alliance commitments, though enforcement relies on congressional oversight rather than judicial review.

This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.

Sponsor

Sen. Shaheen, Jeanne [D-NH]

Cosponsors (1)

Sen. Murkowski, Lisa [R-AK]

Recent Actions

• 2026-01-13: Read twice and referred to the Committee on Foreign Relations.
• 2026-01-13: Introduced in Senate

Bill Versions

• NATO Unity Protection Act — issued 2026-01-13 — PDF (3 pages)