US President George W. Bush (L) and his wife Laura Bush stand in a silent tribute to China's earthquake victims at the Chinese Embassy in Washington May 20, 2008. Bush came to the Chinese Embassy on May 20 to mourn Chinese quake victims.

US President George W. Bush (L) leaves words on the book of condolence as his wife Laura Bush (C) and Chinese Ambassador to the US Zhou Wenzhong look on at the Chinese Embassy in Washington May 20, 2008. Bush came to the Chinese Embassy on May 20 to mourn Chinese quake victims.