Clean Power Rule / "Nationals"

A discussion on why there is no reasonable argument that the Clean Power Plan the Supreme Court just stayed is unconstitutional. John Oliver in one of his shows referenced how those in American Samoa are "nationals," not U.S. citizens; here is coverage of a lawsuit against that. The lower court opinion is interesting, including the reference that apparently locals as a whole support that approach. Huh. Not sure though if beng a "national" will [or how] lead to a looser equal protection rule (see opinion) or why they should be different than Guam here.