One of the questions is, ‘Do other countries’ laws affect who is considered a citizen of the US?’
What about divided loyalties? Michele Bachmann became a Swiss citizen (by Swiss law) when she married a Swiss national. Does she have divided loyalties?
Or how about Trump’s Slovenian wife? Does it arouse suspicions of his loyalty?
Good point - we would need to know whether we recognize a foreign country’s law making someone a citizen of their country as part of the analysis.