Following the 2012 document leak and the controversial billboard campaign, substantial funding was lost as corporate donors, including the General Motors Foundation, sought to dissociate themselves from the Institute. According to the advocacy group Forecast the Facts, Heartland lost more than $825,000, or one third of planned corporate fundraising for the year. The shortfall led to sponsorship of the Institute's May 2012 climate conference by Illinois' coal lobby, the Illinois Coal Association, the Institute's "first publicly acknowledged donations from the coal industry," and the Heritage Foundation. The billboard controversy led to the loss of substantial corporate funding, including telecommunications firm AT&T, financial service firm BB&T, alcoholic beverage company Diageo and about two dozen insurance companies, including State Farm and the United Services Automobile Association. Pharmaceutical companies Amgen, Eli Lilly, Bayer and GlaxoSmithKline ended financial support. Heartland's May, 2012, climate conference was smaller than previous years.