In a significant rupture within the Republican Party, multiple senior GOP lawmakers have publicly condemned President Donald Trump's persistent campaign to acquire Greenland, with one congressman branding the idea "the dumbest thing I've ever heard." The internal rebellion comes as Trump escalates the situation by imposing punitive tariffs on allied nations, including the UK and Denmark.
Republican Backlash and Warnings of 'Strategic Self-Harm'
According to a Politico report, at least half a dozen Republican members of Congress have voiced strong opposition to the president's proposal to annex the Arctic island. They have labelled the move unprecedented, damaging to critical US alliances, and an action that could trigger impeachment proceedings.
Senate Majority Leader John Thune stated this week that "there's certainly not an appetite here for some of the options that have been talked about or considered." His predecessor, Senator Mitch McConnell, delivered an even sharper critique, warning that military action against Greenland would constitute "an unprecedented act of strategic self-harm" that risked "incinerating" the NATO alliance.
Senator Thom Tillis, who is retiring in 2026, predicted a bipartisan revolt if Trump attempted a forcible takeover. "If there was any sort of action that looked like the goal was actually landing in Greenland and doing an illegal taking … there'd be sufficient numbers here to pass a war powers resolution and withstand a veto," Tillis said.
Trump's Tariff Threat and Greenland's Defiance
The Republican dissent follows weeks of renewed interest from President Trump in acquiring Greenland, ostensibly for US national security to counter Russian and Chinese influence. On Saturday 17 January 2026, he announced new 10% tariffs on the UK, Denmark, and other European nations in retaliation for their opposition to his annexation proposal. Trump declared these tariffs would rise to 25% on 1 June and remain until a deal for the US to purchase Greenland is secured.
On his Truth Social platform, Trump claimed, "World Peace is at stake! China and Russia want Greenland, and there is not a thing Denmark can do about it," adding the dubious assertion that the territory is "only protected by two dogsleds."
This aggressive stance has been met with firm resistance. Officials from Denmark and Greenland met with White House officials on Wednesday, but Danish Foreign Minister Lars Lokke Rasmussen conceded, "We didn't manage to change the American position." Meanwhile, public protests have erupted in Nuuk, Greenland's capital, with residents demanding the right to determine their own future. A recent Ipsos poll found only 17% of Americans support Trump's plan to acquire the island.
Diplomatic Damage Control and Impeachment Warnings
In response to the escalating crisis, congressional Republicans have embarked on a diplomatic mission to reassure European allies. A delegation travelled to Copenhagen this week to explicitly state that any US military action lacks congressional support.
Senator Lisa Murkowski, part of the delegation, emphasised, "Greenland needs to be viewed as our ally, not as an asset, and I think that's what you're hearing with this delegation."
The political consequences for President Trump could be severe. Congressman Don Bacon explicitly warned that an attempt to seize Greenland by force would result in Trump's impeachment. This internal GOP opposition starkly contrasts with the White House's position, which stated earlier this month that it was "discussing a range of options" and noted that "utilising the U.S. military is always an option at the commander-in-chief's disposal."
The situation presents a rare and profound split between the Republican-controlled Congress and a Republican president, centred on a foreign policy initiative that has drawn almost universal international condemnation and minimal public support at home.
