You said, “If one has it, one cannot be “adopted out” of US citizenship.”
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Can one be “adopted into” natural born citizenship?
Also, one can make an affirmative act after the age of majority that removes one’s eligibility to be POTUS.
Too bad Solomon doesn't have a darn cell phone! IS THIS THE "Walking hand-in-hand down a Chinese beach with my American wife, we find a Chinese baby of unknown provenance floating in a basket of freshly starched Arrow shirts scenario?
We rush it back to Maine and adopt the cute little thing. Is it a "Natural Born Citizen?" Call me cruel, but I don't think so. The cute little Feller or Gal would be naturalized upon adoption. OTOH, The courts (remember those quaint things?) have ruled that if a Natural Born Citizen is adopted, he still remains an NBC, and it's OK if he wants to run for POTUS. Our de facto POTUS has spent a fortune on this one, and has thrown the fog of confusion over the masses with his conflation (wonderful word) of Native-Born, which he hasn't proven, with Natural Born, which he cannot prove, since the putative Paw was a foreigner, not to mention a wife-beatin' commie bigamist with a DUI problem and enough wives and children in Darkest Africa to populate a small village of them quaint mud huts the POTUS' relatives live in, except for Aunt Zeituni, who's on Welfare up in Boston, and lives in Public Housing, just like her nephew, except one hopes, with a smaller lawn.
Question 2: Also, can one make an affirmative act after the age of majority that removes one’s eligibility to be POTUS.
Not being a wise Latina, I would say "Yasure." One can voluntarily surrender one's American citizenship. But if one were a "Natural Born Citizen," I believe that status would remain, but as a a now-foreign subject or citizen, other disqualifications would kick in.
Kenny Bunk has spoken. Go in peace. To Hawaii, and find out what the heck the Mombasa Moonbeam really is, who he is, and give me the name of everyone who voted for him, so that I may punish them each and every one, in horrid ways.
I hope I have been able to adumbrate sufficiently upon your legal questions.