Sept. 15 -- Senator Elizabeth Warren, a Democrat from Massachusetts, is urging the next U.S. president to investigate and potentially jail bankers involved in the 2008 financial crisis. She explains the questions she wants answered on the lack of indictments by the Department of Justice, and comments on the fake account scandal at Wells Fargo, as well as Republican presidential candidate Donald Trump's approach to banks. She speaks with Bloomberg's David Gura on "Bloomberg Markets."