In a major move for the Obama administration, the US Department of Justice (Antitrust Division) and the US Department of Agriculture have opened an investigation into whether any illegal monopolies exist among the dominant agricultural companies. The focus is primarily on three sectors: seed companies, beef packing and dairy. With a history of exemption from antitrust regulation the industry as a whole has become extremely concentrated. For instance, the the top four beefpacking companies currently control 83.5% of the market. As part of this investigation, a series of public workshops will be held across the country. Read on for dates and locations, as well as information about submitting comments online or by mail.