On January 1, 1995, the IDA was placed under the aegis of the World Trade Organization. Its members included Argentina, Bulgaria, the European Union, Japan, New Zealand, Romania, Switzerland, and Uruguay. The United States, which had been one of the original members, withdrew from the organization in 1985 to protest sales by the European Union of butter and other basic dairy products at prices below the minimum export prices established by the Committee on Certain Milk Products that, along with the International Dairy Council, administered the Arrangement.