The US foreign territories have nothing to do with resource extraction. They're primarily maintained to provide strategic territory to the US armed forces.
Of course, chip manufacturing was moved almost entirely to Taiwan and South Korea out of complete happenstance, not because it was cheaper to make there for the American mega corps making huge profits out of the chips. And that's just one example.
Offshoring parts of your supply chain (and to high income countries no less) is your idea of colonial imperialism?
I'm not talking about territories, I'm talking about the US' long, well-documented history of neoliberal foreign interference with democratic nations, with the aim of establishing economic and ideological superiority.