On February 16, 2009, the US-Swiss Safe Harbor Framework, which is comparable to the EU-US Safe Harbor Framework, was adopted. The US-Swiss framework is intended to simplify the transfer of personal data by Swiss companies to American companies that are self-certified with the US Department of Commerce (DOC). Self-certified US companies are bound by the principles contained in the framework. They will automatically be considered as providing an adequate level of data protection under Swiss law.

Further information is available here

and see original document  for the full framework