Why would the US do this? They are the incumbents and there's no advantage (and possibly only disadvantage) to owning this territory.
My personal view is that the current geographical extent of the United States is static; there is no political will to change this - and why would you, when you can get all the benefits without the problems?
My personal view is that the current geographical extent of the United States is static; there is no political will to change this - and why would you, when you can get all the benefits without the problems?