no it's not. that is just utter bullshit. US is not world police. unless they can prove US citizens were TARGETED specifically than maybeeeeeeeee and that's a maybe. US shareholders can be affected by anything in the world a sneeze and a fart as well doesn't mean that gives US the reach to other jurisdictions.
That's complete conjecture. Do you have any evidence to suggest the US wont be interested in a multimillion dollar scam when US citizens start complaining. You think they will do nothing? There are UK citizens extradicted to the US every year for similar frauds.
1) SEC is only civil claims. doubt they would be able to even get an extradition for that. 2) 1 million scam is small compared to the shit tons of scams going on nonstop in this world 3) certain countries won't extradite their citizens to US for this kind of stuff, russia, china, many others 4) hopefully it wont have to come down to that 5) it's a mess regardless