There may be serious arguments for and against an independent Guam.  Small countries have to decide whether they can support a population alone or join some kind of federation.

The bottom line is that Guam is one more reminder of how imperialistic and hypocritical the US has been over the years.  I certainly grew up with the notion that the US stood for independence and nationalization of any peoples who wanted it and had a viable country.  India should be independent, Algeria...New Zealand....Korea...Afghanistan....Kenya.....etc.  Slowly I was shocked to learn that the US supported France in holding on to Algeria and Vietnam.  I learned we economically colonized Iran.

I don't believe in authoritarian governments, theocracies, or colonies.  Could those just be the ideals of a few such as myself or could they be true American values?