Putting pressure on Denmark to give up Greenland is likely to backfire. The Danish are relaxed in the face of US threats of a trade war. If Trump wants to build his wall he is going to need Denmark.
It is possible that the anointed one has not thought through the consequences of aggressively pursuing acquiring Greenland from Denmark. The Danish have a few aces up their sleeve that could severely impact the USA should they decide to play them.
Trump has ambitions to build a wall along the border with Mexico. If Denmark decides to ban exports of LEGO to the USA the future of the wall could be in doubt.
Additionally, the weigh loss drug Ozempic is made by a Danish company Novo Nordisk. Should they decide to halt exports to the USA there is a risk of the USA disappearing under blubber. Ozempic is also an important diabetes control drug. Novo Nordisk is the highest valued company in Europe. The USA imported $5.7 billion of pharmaceutical products from Denmark in 2033