Karpeles has nothing to do with the US, there is no way as foreign citizen who did not commit any crime on US soil would be extradited to US, ever.
What's the matter - you don't get the news. US extradites assholes all the time - even when they are not US citizens:
http://www.bbc.com/news/world-europe-33550207 Reuters says his wife now lives in Canada and I know that to get US citizenship you have to be married and cohabiting for about 7 years. Maybe the US will extradite him after he's served his Japanese time, then he can do some time in a US jail.
Canada is no longer part of the US. They threw Canada out for being too drunk on Moosehead beer while playing hockey - eh?.
Correction. Canada kicked the USA's ass in a little thing called the war of 1812. Burnt the White House down too.