Two years since BP disaster, Congress has done nothing

Bob Cavnar, author of “Disaster on the Horizon: The Story Behind the Deepwater Well Blowout,” and 30-year veteran of the oil and gas industry, talks with Rachel Maddow about the lack of any new oil spill strategies since the BP Deepwater Horizon spill in the Gulf of Mexico, and the utter lack of action by Congress to improve safety.April 21, 2012