It seems that some in New Zealand think a new food bill is taking that path:
http://nzfoodsecurity.org/2011/07/19/food-a-controlled-substance-not-in-my-back-yard/
A comment (or three) from almost-neighboring Australians:
http://www.la.org.au/news/251111/nz-food-legislation-removes-right-grow-food