The blowout of the Deepwater Horizon and subsequent underground oil spill in the Gulf of Mexico in 2010 is considered by many to be the worst environmental disaster in U.S. history. Interest groups, public officials, and media organizations have spent considerable time documenting the economic and ecological impacts of this spill as well as the causes of the spill, ostensibly to prevent future disasters of this magnitude. However, rather than an unbiased search for answers, such investigations involve strategic efforts by a variety of political actors to define the spill and its causes in ways that lead to their preferred policy solutions.