There are ways to do that without pissing off our allies and risking that they'll say "no" or "it costs more now because you're an asshole" next time we want to base strategic military assets there. The US doesn't want or need Greenland to increase its defense spending, it wants Greenland dependent on the US for defense so we can use Greenland as a strategically placed ally and put our own military equipment there.

Denmark, BTW, was already above their 2% NATO spending target. If you want to bully allies into meeting NATO defense spending targets, pick a different one. Page 4 https://www.nato.int/nato_static_fl2014/assets/pdf/2024/6/pdf/240617-def-exp-2024-en.pdf