Simon Johnson, chief economist at the International Monetary

UNITED STATES - APRIL 11: Simon Johnson, chief economist at the International Monetary Fund, speaks at a news briefing on the IMF's World Economic Outlook report, April 11, 2007 in Washington, D.C. Charles Collyns, an IMF economist and deputy director of the Western Hemisphere department, listens at left. The IMF raised its forecast for European economic growth and predicted this year will be the first since 2001 in which it outpaces U.S. expansion. (Photo by Brendan Smialowski/Bloomberg via Getty Images)