Kevin Warsh Signals Potential GreenspanStyle Stewardship as New Fed Chair US Productivity Growth Slows in Q4 as Labor Costs Accelerate SEC Proposal Could Allow Companies to Skip Quarterly Earnings Reports Brazilian Beach Scams Debit Card Overcharges Cost Tourists Thousands Chinas Commerce Minister Skips APEC Opening Trade Representative Steps In Amid Urgent Official Business Consumer Credit Growth Surges in December Potential Implications for Spending and Economic Outlook Plus500 Reports 11 Quarterly Revenue Rise Affirms FullYear Outlook