Greenland is part of the North American continent
Doesn't matter where it is, it's not part of the US, using imperial arguments doesn't make your point stronger. The position the US is in is because of the alliances it built, remove those alliances and you undermine American interests ie the dollar as a global reserve currency. Your country can never pay the debt it has built bullying the world.
As pointed out the US has the agreed right to put as many troops on Greenland as it wishes, us companies can tender to mine what they want on Greenland. The entire thing is a vanity project of the king/ emperor American subjects put in power. The result is a diminished America and an impoverished populace.
It's ridiculous that the people of the US felt they had no choice but to put such an obvious fraud in charge. The place needs a good old dose of social justice cos both right wing parties are in the pay of billionaires. Of course that is never going to happen as the subjects seem to like being royally fcuked.