Washington is witnessing a political shock few thought possible: Republicans are joining Democrats to stop President Donald Trump from dragging the United States into a confrontation with its own NATO allies. What began as aggressive rhetoric toward Greenland has now triggered a rare bipartisan revolt on Capitol Hill, exposing deep concern that Trump’s approach to alliances is spiraling into a full-blown NATO crisis. In 2026, the unthinkable has become real — Congress is acting to restrain its own president from threatening war against friends.

At the center of the storm are Trump’s repeated comments suggesting military pressure on Greenland, a self-governing territory under Denmark, a NATO member. Former defense and foreign policy officials from both parties have warned that “you don’t negotiate with allies by threatening force.” Polls show public support for such a move stuck in single digits, reflecting widespread alarm. European capitals, meanwhile, are watching closely, fearing that Washington’s credibility as alliance leader is being dismantled in real time.

The backlash has now taken concrete form in legislation. A new House bill, the “Stop the Funding of the NATO Invasion Act,” co-sponsored by Republican Don Bacon and Democratic lawmakers, would bar any federal funds from being used for military action against Greenland. This strategy goes beyond symbolism. By cutting off money at the source, Congress would make any unilateral military move automatically illegal, bypassing the need for after-the-fact political battles and creating a clear legal firewall.

The bill goes even further by defining such an order as unlawful, placing U.S. military officers in a protected position to refuse it. That provision reflects growing anxiety within the armed forces about being caught between political pressure and constitutional duty. Lawmakers are signaling that the alliance system is not optional policy — it is a strategic pillar that cannot be dismantled by impulse or intimidation.

Senior Republicans with deep NATO experience have issued unusually blunt warnings. They argue that Denmark has been among America’s most loyal partners, suffering heavy casualties alongside U.S. troops in Afghanistan and consistently honoring its treaty obligations. To threaten a country that has “punched above its weight” sends a signal not only to Europe, but to Moscow and Beijing that Western unity is fracturing. As one senator put it, the only thing worse than going to war with allies is going to war without them.

Behind the drama lies a deeper ideological clash. Trump-era talk of rigid “spheres of influence” recalls 19th-century power politics abandoned after World War II. The postwar order was built on alliances precisely to prevent great powers from carving the world into hostile blocs. Undermining NATO does not make America stronger — it leaves it isolated in a world where Russia, China, and Iran coordinate their pressure.

The bipartisan revolt marks a rare moment of institutional self-defense in U.S. politics. Congress is reasserting that alliances are not personal bargaining chips, but national стратегic assets. Whether the legislation passes or not, the message is already clear: a growing share of Washington is unwilling to let America’s most successful alliance be sacrificed to short-term theatrics. In a dangerous world, unity is leverage — and Congress is moving to protect it.