The term "sell American" is something that I came across a while back while doing research on metric websites. What I seem to notice at stores, is that alot of homemade American products such as food, including meat, milk, potatoes, etc, seem to emphasize US Customary Units rather then metric units. Often many of these companies tend to be local based, and seem to assume that being local, metric units are not needed. This is not true for a lot of reasons. One of the reasons is that because the local companies emphasise only Customary Units, they cannot sell outside the US. If metric units were used and emphasized on home grown products, we could increase imports of our products across the globe, allowing small companies to gain an international advantage over companies that sell only in America. Another reason why metric units are important to local American companies is that using SI allows for more efficient and cheaper packaging and sizing, thus cutting costs. Lower costs plus international trade combined would make for a very profitable situation for local, and small companies.