The gist

Bans the US from invading any North Atlantic Treaty Organization (NATO) ally, cutting off both funding and personnel actions for any such invasion.

Who wins, who loses

• Wins: NATO allies like Canada, Denmark (Greenland), and European members worried about US threats.
• Loses: any administration seeking military options against allied territory; expansionist policy advocates.

What it does

• Blocks all federal funds from being appropriated or used to invade a NATO member country.
• Extends the ban to territories covered by Articles 5 and 6 of the Washington Treaty.
• Prohibits any US officer or employee from taking action to execute such an invasion.
• Creates a hard statutory limit on executive military action against allies.

Why should I care?

Supporters say the bill reinforces 75 years of alliance commitments and prevents a constitutional crisis if a president ordered attacks on allies. Critics argue it's unnecessary micromanagement of the commander-in-chief and responds to threats that won't happen. The bipartisan cosponsor list is unusual for foreign policy. Where do you land? Vote below and use "Tell Your Rep" to make sure your voice reaches Congress.