Democrats believe Greenland — sovereign territory belonging to a NATO ally — could be different. Sen. Tim Kaine of Virginia, who co-authored the Venezuela measure and signaled a raft of new war-powers legislation, acknowledged to reporters Wednesday that prospects were dim that a veto-proof number of GOP senators would join Democrats’ efforts.

But “we might on Greenland,” Kaine added.

Thune’s predecessor as Republican leader, Sen. Mitch McConnell of Kentucky, spoke out in a floor speech where he said military action against Greenland would be “an unprecedented act of strategic self-harm” that risks “incinerating” NATO alliances.

Rep. Jeff Hurd (R-Colo.), meanwhile, said he was “deeply concerned” about the administration’s Greenland message.

“I don’t think it is productive, and I don’t think this is the way to treat an ally,” he said, adding that he “would be opposed to military action in Greenland.”

But even as more Republicans speak out about Trump’s Greenland ambitions, it’s not clear they could put preemptive guardrails on his actions in this Congress even if they wanted to. Instead, they appear to be hoping that Trump will read the writing on the wall and realize he doesn’t have support on the other end of Pennsylvania Avenue.

Democrats are vowing to introduce a spate of war powers resolutions, including on Greenland, in the coming weeks and months. Yet even Tillis, who predicted overwhelming support for such a resolution in the case of “imminent” military action, said he would not currently support a measure to stop Trump from using force in the region because it would “legitimize” a threat he doesn’t think is now real.

Instead, Tillis is using his megaphone as a retiring senator to launch broadsides against Trump’s top aides, whom he blames for some excesses of the administration. While a Greenland takeover might be supported by hard-line deputy chief of staff Stephen Miller, Tillis said, “it’s not the position of the U.S. government.”That, he said, is “another reason I’m going to Copenhagen.”

Sen. Josh Hawley (R-Mo.), who initially supported the Venezuela war powers resolution before backtracking, also said in an interview that he was not on board with a similar effort for Greenland.