In Thursday’s testimony before the Senate Banking Committee, Treasury Secretary Steven Mnuchin took a beating from Senator Elizabeth Warren over the issue of Glass-Steagall. There are many policy issues in which I disagree with Senator Warren but when it comes to Wall Street regulation, she is one of the most knowledgeable people in the Senate and far beyond those walls. During the Great Financial Crisis she appeared regularly on CNBC and Bloomberg television networks. While merely a Harvard law professor, she offered great insights and understood the depths of the problems that caused the crisis. If Jamie Dimon had not blocked her appointment as head of the Consumer Finance Protection Bureau (a wild conjecture on my part), she would not be a U.S. Senator. After president Obama caved in to Wall Street pressure, Warren ran for the Senate in Massachusetts in 2012, defeating Scott Brown.