What banks do you know that offer it to US citizens? I am aware of Credit Suisse and UBS but not sure about others (e.g. pensionskasse?).
If you have Saron based ones what is the interest rate / margin you got? I see online the best being in the 0.5% but doubt it is easy to get this as a US citizen (we have enough savings being able to pay the house but all is tied in US brokerages so can't bring money to the Swiss bank).
thanks for your help