So basically, you don’t know.
See post 27 for a clarification as to what being subject to a nation’s jurisdiction means.
Needless to say, if you travelled to another country, you would be subject to THEIR jurisdiction, not the United States’, because their laws would take precedence over ours.
/exception being if you were representing the USA in an official capacity, which comes with a degree of immunity
//such as being a diplomat
So any country you visit changes your citizenship in that jurisdiction, regardless of any treaties, until you travel to another jurisdiction? Sounds like you're mentally deficient about birthright citizenship and 'jurisdiction', and how treaties affect your rights when traveling. You can't seem to distinguish a country's sovereign birthright jurisdiction from its laws.
Traveling in another country does not change your citizenship, and you are still at a loss to explain why aliens traveling here are entitled to birthright US citizenship just because they are obeying our laws.
You misspelled "opinion."