Government intervention in a market that affects the production of a good.
Changes in consumer demand are important for lack of regulation. With every economic problem, there seems to be a big push for more regulation.
Raw Milk License
Federal agents recently raided an Amish farm because they were selling "unauthorized" raw milk.
Pumpkin and Christmas Tree Vendor License
In Lake Elmo, Minnesota farmers can be fined $1,000 and put in jail for 90 days for selling pumpkins or Christmas trees that are grown outside city limits.