Marketing orders and agreements in United States agricultural policy allow producers to promote orderly marketing through collectively influencing the supply, demand, or price of a particular commodity. Research and promotion can be financed with pooled funds. They are authorized by the Agricultural Marketing Agreement Act of 1937 (AMAA), as amended. The AMAA was a piece of New Deal era legislation implemented for price stability and essential marketing functions in response to economic pressure faced by small farmers in the 1920s.