The probles with shipping to the USA is cost but mostly it’s the FDA results and restrictions - http://www.fda.gov/Food/GuidanceRegulation/ImportsExports/Importing/
It’s not easy, might require some changes to the product so currently it’s not an option. We ship to all of Europe and many other worldwide countries.
Having said that we do have a plan on how to achieve this, my estimate is 2 months and there will be a USA solution.