Certificates of Origin
This document certifies that goods were produced in the United States. The shipper must sign the certificate, and when required, an accredited chamber of commerce or trade bureau must certify it.
The local Chamber of Commerce is responsible for notarizing the certificate of origin. You can find you local Chamber of Commerce here. They do not prepare the document, they just notarize it. Often the exporter is asked to be a member of the chamber of commerce and agree to a notarized hold-harmless agreement.
You can find a blank sample Certificate of Origin form here.