I don't really need to give sources because they've been given dozens of times before, and it's the status quo. As for your source, I can pick it apart: "As a permanent resident, you have the right to: ... Live and work permanently anywhere in the U.S." Since one does not in fact have the right, even as a citizen, to live and work permanently in American Samoa without permission, that throws this blanket statement into doubt. I'm not saying this is saying American Samoa is not part of the country; I'm saying, you can't annex an island (or un-annex) with a brochure. If we had decided American Samoa was part of the country, and I supplied this brochure as evidence that it shouldn't be, would you accept that? Because of this statement?