One of the most iconic brands in financial television returns for today's issues and today's world. This week's Wall Street Week features David Westin's interviews with Former Treasury Secretary Lawrence H. Summers, Moelis & Company Vice Chairman Eric Cantor, SEC Chairman Jay Clayton and University of Chicago Harris School of Public Policy Dean Katherine Baicker. The conversations highlight the challenges of vaccine distribution, the benefits and pitfalls of mega-IPOs, and the role of regulations in long-term investing.