US dairy farmers are blaming a low-cost milk powder for diluting their business and misleading consumers. Milk Protein Concentrate, MPC, is a highly filtered form of dried milk protein that is imported to make cheese products at a lower cost and with less milk. Many farmers blame the lack of restriction on imports of MPC for the current low milk prices. William Underwood, a dairy farmer in Tully, New York, said he has not seen dairy prices so low since the late 1970s. "It's affected all dairymen in the United States, and it hurts us, because some of the major cheese companies like Kraft are making a cheaper product by using it," said Underwood. "Some of the countries that make it don't have the same sanitary regulations and requirements we do here."