JPMorgan's Dimon Puts Career on Line

When Jamie Dimon, head of JPMorgan Chase, appears today before the Senate Banking Committee to field questions about his bank's $2 billion-and-climbing trading loss, people who know him well say they have little doubt how he will respond. He will display, they predict, the same traits—attractive and not-so--that have taken him, at age 56, to the pinnacle of the banking industry. ...