2007. In December, Dean Foods bought the Wells Dairy milk plant in Le Mars, Iowa. The plant manufactured Blue Bunny ice cream. Dean Foods purchased Alpro in 2009 for an estimated US$455 million, making it a "global leader in soy beverages". At that time, the company was restructured and a number of subsidiaries were sold, including Rachel's Organic. Dean Foods spun off WhiteWave Foods, the maker of Horizon Organic and Silk Soymilk, as a standalone company in May 2013. Legal Proceedings In March 2005, the Cornucopia Institute filed a complaint with the United States Department of Agriculture (USDA) alleging that their Horizon Organic subsidiary was violating "organic livestock management" standards. On May 12, 2008, the Cornucopia Institute filed a second complaint with the USDA again alleging that Deans Foods had violated federal organic regulations requiring access to pasture and fresh grass for their dairy cows. Silk brand soy milk was made using organic soybeans until early 2009, when Dean Foods switched to conventional soybeans while maintaining the same UPC barcodes and prices on the Silk products and replacing the word “organic” with “natural” on the product's packaging, prompting the Cornucopia Institute to file complaints that the company had not properly notified retailers or consumers. Foremost Farms USA, a cooperative of over 2,000 dairy farmers in several mid-western states, sold its Wisconsin milk processing plants to Dean Foods in 2009. In January 2010, the US Department of Justice and the state attorneys general's office of Wisconsin and Michigan, filed a lawsuit objecting to the purchase and alleged that it created a monopolizing provider. Dean Foods announced it was contesting the complaint. In 2011, a class action suit was brought against Deans Foods over health claims made on the packaging of Horizon Organic Milk. In 2012, Dean Foods contributed $253,950 to fund opposition to California's ballot Proposition 37 which would require mandatory labeling of foods containing genetically modified ingredients. In 2017, bettor and stock trader Billy Walters was convicted of insider trading in Dean shares in Federal court. Walters' source of non-public information was company director Thomas C. Davis employing a prepaid cell phone nicknamed "the Batphone" and, sometimes, the code words "Dallas Cowboys" for the company name. The case involved profits or avoided losses of $40 million from 2008 to 2014. The verdict was to be appealed according to Walters' lawyer. See also FTC v. Dean Foods Co., 1966 decision of