1999 to January 20, 2001, Wolin served as General Counsel of the U.S. Department of the Treasury, under Secretary Lawrence Summers. In January 2001, Secretary Summers presented Wolin the Alexander Hamilton Award, the highest honor awarded to a Treasury official. In early 2001, Wolin was also visiting fellow in economic studies at the Brookings Institution, and an adjunct assistant professor at the Kennedy School of Government at Harvard University. The Hartford In March 2001, Wolin joined The Hartford Financial Services Group as executive vice-president and general counsel, overseeing the company's legal and tax departments, government affairs, communications, and marketing functions. In 2007, he succeeded David K. Zwiener as president and COO of the company's property and casualty insurance subsidiaries. Obama administration In February 2009, shortly after Barack Obama took office, Wolin returned to Washington, D.C. as Deputy Assistant to the President and Deputy Counsel to the President for Economic Policy. In March 2009, he was nominated as Deputy Secretary of the United States Department of the Treasury by President Obama, then confirmed by the senate on May 18, 2009. Wolin served as United States Acting Secretary of the Treasury from January 25 to February 28, 2013, prior to the confirmation of Jack Lew, who was nominated by Obama to succeed Secretary Timothy Geithner. Wolin was a "key architect" of U.S. financial reforms during the Great Recession, and was instrumental to the development and implementation of the Dodd-Frank Wall Street Reform and Consumer Protection Act. The Act aimed to upgrade "the foundation for a stronger financial system – closing regulatory gaps, increasing transparency for consumers, and strengthening prudential requirements,” including an annual “stress-test” by the Federal Reserve of the 33 banks designated as being “systemically important” to the U.S. economy. From early 2009 until late 2013, during his tenure as Deputy Treasury Secretary, Wolin also chaired the Committee on Foreign Investment in the United States (CFIUS), which reviews, for national security reasons, any transaction that would result in a foreign entity having control over a U.S. asset. In July 2011, Wolin was appointed to the Government Accountability and Transparency Board. In January 2013, Wolin was awarded a second Alexander Hamilton Award by Secretary Timothy Geithner. On July 22, 2013, President Obama officially announced Wolin’s retirement as Deputy Secretary at the end of August 2013, stating that “His deep knowledge and excellent judgment helped us prevent a second Great Depression, pass tough