Jim McKelvey, Square Co-Founder, Author of "The Innovation Stack," and St. Louis Federal Reserve Deputy Chair, discusses how much regulation Congress should wield over large tech companies. Jill Carey Hall, BofA Securities U.S. Equity Strategist, says she is cautious on the upside of U.S. markets because there could be payback risk from stimulus measures. Priya Misra, TD Securities Global Head of Rates Strategy, says the recent dollar weakness has been a result of the market listening to the Fed. Dennis Gartman, Retired Editor of The Gartman Letter, says gold has become a little too crowded. Al Broaddus, Former Richmond Fed President, weighs in on Fed policy as Congress works on fiscal aid.