Not forever. Only for a few hundred years. And they'd still be Spanish, and they'd have the option to move to Spain proper.

And if they didn't want that, then their ancestors shouldn't fucking have brutally conquered land on another continent? Or they could've spent the last few hundred years moving back to where they came from? Just because their imperialism is a while ago doesn't mean it's just.

> Is the US giving away Hawaii?

Does the US have huge logistical problems holding on to Hawaii and cause a problem for the rest of the supernational organization it shares open borders with? Does Russia? Turkey?