Robert Rubin, chairman of the executive committee of Citigroup Inc., gives a lecture at Cooper Union in New York, U.S., on Wednesday, Jan. 30, 2008. Rubin, a former U.S. Treasury secretary who joined Citigroup in 1999, signaled that further interest-rate cuts by the Federal Reserve may hurt an ``already vulnerable dollar,'' after the central bank's fastest reduction in borrowing costs since 1990.
Robert Rubin, former Secretary of the Treasury, former Goldman Sachs board member and former Director of Citi Group, waits for a luncheon at the US State Department May 19, 2010 in Washington, DC. Secretary of State Hillary Rodham Clinton and Vice President Joseph R. Biden hosted Mexico's President Felipe Calderon and his wife Margarita Zavala for a luncheon before the couple traveled to the White House where they will meet with President Barack Obama and have a state dinner.
クレジット: Brendan Smialowski
Robert Rubin, co-chairman at the Council of Foreign Relations and former U.S. Treasury Secretary, speaks at the annual Milken Institute Global Conference in Beverly Hills, California, U.S., on Tuesday, April 30, 2013. The Global Conference convenes chief executive officers, senior government officials and leading figures in the global capital markets to explore solutions to today's most pressing challenges in business, health, government and education. Photographer: Patrick T. Fallon/Bloomberg via Getty Images
Robert Rubin, former chairman of the Executive Committee of the Board of Directors at Citigroup Inc., prepares to testify before the Financial Crisis Inquiry Commission on Capitol Hill April 8, 2010 in Washington, DC. The inquiry commission is investigating the causes, including subprime lending, that lead to the global financial collapse that began in the fall of 2008.
クレジット: Chip Somodevilla
Robert Rubin, former U.S. treasury secretary and former chairman of Citigroup Inc., speaks at the Africa Investor Summit at the New York Stock Exchange in New York, U.S., on Friday, Sept. 17, 2010. The summit brings together decision makers from African Stock Exchanges, pension funds, global investors, listed companies, fund managers, stockbrokers and analysts who have an interest and follow the performance of African equities. Photographer: Jin Lee/Bloomberg via Getty Images
Robert Rubin, co-chair of the Council on Foreign Relations and former U.S. Treasury secretary, speaks at the Brookings Institution's Hamilton Project economic forum in Washington, D.C., U.S., on Thursday, May 3, 2012. Overhauling the U.S. tax code may promote economic growth and reduce inequality, said Rubin. Photographer: Andrew Harrer/Bloomberg via Getty Images
Robert Rubin, former chairman of Citigroup Inc.'s executive committee, testifies at a hearing of the Financial Crisis Inquiry Commission in Washington, D.C., U.S., on Thursday, April 8, 2010. Former Chief Executive Officer Charles O. 'Chuck' Prince said he wasn't aware of the mortgage-related securities that caused the bank's biggest losses until the financial crisis struck. Photographer: Joshua Roberts/Bloomberg via Getty Images