With November’s election potentially unraveling key features of the financial regulatory structure instituted over the past eight years, experts say it’s time for policymakers to figure out what’s working and what needs to be fixed. During a panel session hosted by the Bipartisan Policy Center, Richard Berner, director of the Office of Financial Research, said that more information is needed about liquidity because a lack of it is often cited as one of the unintended consequences of regulation. “Market liquidity is...