I think the above poster was trying to say, "there is no reason" for the US to claim Greenland. We have a treaty that allows us to build our military bases on the territory. If we want to do security stuff there, we already can.

The reason is that Trump wants to recolor the map and make the US bigger that it is, and be known as the one who did it. Nothing deeper than that.

Ironically, that will make some projects harder, especially if US laws such as NEPA start being applied on the Greenland territory. Hello environmental lawsuits from all sides.

Indeed, Trump seems to be suffering from Putin syndrome: he thinks that the best way to make the United States (and himself) glorious is through territorial expansion.

Which more than well illustrates the absurd claims that the US needs Greenland because Europe places too little military power there.