What’s behind the FSO movement? Mainers’ fervor for food sovereignty began to solidify in the state at the beginning of this decade, in the wake of the state’s prosecution of a raw milk farmer. Another key impetus for the movement was a state exemption for farmers who wanted to sell less than $1,000 in poultry annually. Those who wished to sell poultry under the so-called exemption first had to spend tens of thousands of dollars to comply with state regulations.