Greenland is part of Denmark. It's been that way since the 18th century. It has its own local government, with a parliament that oversees some domestic and civil affairs. Laws pertaining to Greenland's defense,

During his joint address, Trump stressed the need for U.S. control of Greenland, citing security concerns and ongoing efforts to acquire the territory.

Greenland’s prime minister says “Greenland is ours” and cannot be taken or bought, in defiance of the claim by President Donald Trump that the United States will acquire the territory “one way or another.