This is incorrect - I suppose we should make this clearer on our site.
For the record: Kraken is owned and operated by Payward. Payward's parent company is a US company. The Payward entity in the UK is one of many overseas entities that we have across half a dozen jurisdictions already, and that number is growing... particularly here in Asia.
https://www.companiesintheuk.co.uk/ltd/payward
Their bank is German.
I don't think it is a US business.
Oh wait, maybe yes:
http://www.reddit.com/r/Bitcoin/comments/1rztum/release_the_...
CEO is Jesse Powell. Company address is in San Francisco