During World War 1, the United States Government tried to rename hamburgers as 'liberty sandwiches' to promote patriotism
In 2003, when the United States was in the midst of the war with Iraq, France was not particularly supportive. As such, Americans attempted to rename French fries "freedom fries." A similar rebranding occurred in the US during World War I.
The government encouraged Americans to rename traditionally German foods. They attempted to rename sauerkraut "liberty cabbage" and hamburgers "Liberty Sandwiches." Whether or not Americans embraced this change, eventually we went back to calling these foods by their original names.