Gretchen Morgenson; Goldman Sachs Senate Hearings; Evan Thomas

Journalist Gretchen Morgenson of The New York Times reports on the much-anticipated Goldman Sachs Senate hearings. Business writer William D. Cohan and journalists Evan Thomas of Newsweek and Gillian Tett of The Financial Times discuss the hearings and the changing ethics of Wall Street. Evan Thomas continues and shares his new book, "The War Lovers," which examines the historical precedence of "war fever."