I'm sure it was meant more in the "Hey, you don't have to be American for these ideals to apply to you!" sense. You know, like "Life, Liberty and the Pursuit of Happiness" sense. "They must apply to everyone or they mean nothing!"
Except he's talking about the preamble to the Constitution and it (and he) literally says things like "provide for the common defense". It's shocking to think that The Great Bird might not have thought this all the way through.
This is probably why I have often heard fans over the years confuse the document Kirk is holding with the Declaration of Independence which is a rather more aspirational document. (Would the Omega Declaration ALSO have a treasure map on the back of it?)
		
		
	 
Agreed completely regarding the preamble and the aspirational intent. Shatner's delivery of "They must apply to everyone or they mean nothing!" is brilliant, and it's one of my favorite Kirk lines, period.
Set on a lost Earth colony, "The Omega Glory" might have worked a little better, for me at least. That episode suffers from the same unexplained literalism that "Miri" suffers from, regarding the parallel Earth idea, in the latter case with the planet having exactly same geography as ours. Or, they could have made both less literal and simply more generally similar. How you would do that with a preamble or perhaps a declaration and a flag without getting cheesy, I'm not entirely sure, but it might be doable, if the right balance were struck. I'd certainly strive to strike a better balance than the one struck for "Bread and Circuses", which for me had a setting that was still too literally similar to the real world for anything approaching plausibility.
Sorry, I digressed. The point is, I love Shatner's delivery in "The Omega Glory," but yeah the premise wasn't thought through seriously.
	
		
	
	
		
		
			We have a statistically significant population now that thinks that everyone who isn't legally American needs to stop living under American laws. So the people who think otherwise would be American Imperialists?
		
		
	 
I didn't say anything of the kind. What I said was that those who believe that everyone (which means everyone, 
everywhere) should live under American law (and especially observe the rights recognized by law in the US, with the same limitations, regardless of whatever freedoms or restrictions there are that are recognized in the jurisdiction where they are) would be American imperialists, by definition. I thought it would be clear from the context that I was referring to the imposition of American standards into foreign jurisdictions and not referring to migrants who are present in the US without legal permission, which wouldn't even qualify as an example involving literally 
everyone (which necessarily must include all people 
everywhere).
This is directly on point with respect to the story of "The Omega Glory," since the resolution involves acceptance by Cloud William of the premise that the laws of the Yangs must apply to the Kohms. Kirk's line that we're talking about is a direct reply to the question of whether the Kohms must be subject to the Constitution as well. There is no middle ground of letting the Kohms have their country while the Yangs have theirs and the two peoples get along. The resolution is about bringing the planet together under one rule, and that rule is American.
It sounds great as long as we're just talking about everyone being free. But alas things aren't so simple.