Wall Street's most vocal critics of the new financial regulations aren't invited to the party. Neither Goldman Sachs CEO Lloyd Blankfein nor JPMorgan Chase chief Jamie Dimon were asked to attend President Obama's signing ceremony set for today in Washington. FinReg, as the financial sector overhaul is known, is likely to alter the state and style of business of Wall Street and, potentially, sap billions of dollars of revenues from some of the most powerful financial institutions in the country. The high-profile ceremony is expected to be attended by a few hundred guests including Harvard professor Elizabeth Warren, viewed by...