Agreed, I'd even be willing to consider offering Mexico statehood, if they agreed to live under our laws, break into a few states, and adopted English. We took half their country before, and I notice no one seems to be crossing the border southward from Tx., Az. Ca., etc.. (This is said mostly in jest, but only mostly). Puerto Rico as another Carribean nation, fine. Puerto Rico or Guam et al. as the 51st state, also fine. Just make sure they decide in an election that is internationally monitored and squeaky clean, as I don't want to hear bitching about how us colonialists forced them into anything. Figure it out and let us know. Just understand that if you want independence there will be no free green cards and if you want statehood you better work on your English. Inside those parameters, I'm happy.
FQ13 who does have a soft spot for manifest destiny, as long as its consensual. In or out, see if I care, just understand that if the answer is in, you play by our rules.