U.S. Treasury Secretary Henry Paulson (C) asks a question as he and Health and Human Services Secretary Mike Leavitt (L), EPA Administrator Stephen Johnson (2nd L) and Energy Secretary Sam Bodman (2nd R) attend a news conference with the U.S. delegation for the first China-U.S. Strategic Economic Dialogue in Beijing December 15, 2006. Beijing's currency policy is at the core of America's economic relationship with China and the United States needs to see the yuan become more flexible, Paulson said on Friday. REUTERS/Jason Lee (CHINA)