[highball]

Even natural-born citizen could forfeit their citizenship automatically if they became citizens of another country

No they can't.

That would kinda defeat the purpose of dual citizenship, wouldn't it?

Just so we're clear about the timeline, SCOTUS ruled that citizenship could not be taken away, and had to be renounced, back in 1967. Eight months before Obama left the country.

But even if Obama had been granted Indonesian citizenship before then, and consequently had his American citizenship stripped because of that, it would have been restored by that court ruling.

[Mimi3]

“Just so we’re clear about the timeline, SCOTUS ruled that citizenship could not be taken away, and had to be renounced, back in 1967.”

Not according to the information I got in 1985. Isn’t that the whole point - if you become a citizen of a hostile country, you lose your U.S. citizenship?