The tutors have included a high-profile cast of current and former regulators , academics and financial gurus , such as Federal Reserve Chairman Ben S. Bernanke and his predecessor , Alan Greenspan ; Wall Street super-lawyer H. Rodgin Cohen ; and Sheila C. Bair , chairman of the Federal Deposit Insurance Corp. The sessions , which began in March and have continued ever since , are the product of two freshman senators , Bob Corker ( R-Tenn . ) and Mark Warner ( D-Va . ) , whose burgeoning partnership could help shape the legislation that ultimately emerges from Congress .