While serving in the House of Representatives as the Chairman of the Energy and Environment Subcommittee, Markey pushed BP to disclose all that it knew about the true flow rate of oil spilling into the Gulf of Mexico and conducted aggressive oversight into the use of unprecedented volumes of chemical dispersants that were used to combat the effects of the oil spill. In addition, Markey pressed the Department of the Interior for information regarding their Blowout Preventer investigation.
