Aaron Klein is a fellow in Economic Studies at the Brookings Institution, where he also serves as policy director of the Center on Regulation and Markets. He focuses on financial regulation and technology, macroeconomics, and infrastructure finance and policy. Previously, Klein directed the Bipartisan Policy Center's Financial Regulatory Reform Initiative. Klein served as Deputy Assistant Secretary for Economic Policy at the U.S Treasury Dept. from 2009-2012 where he worked on multiple issues ranging from implementing aspects of the financial recovery program to developing new policy for financial regulation, housing finance, transportation and infrastructure, and Native American issues. Prior to his appointment, he served as Chief Economist of the Senate Banking, Housing and Urban Affairs Committee for Chairmen Chris Dodd (D-CT) and Paul Sarbanes (D-MD) where he played a key role in a series of major legislation including, the Economic Emergency Stabilization Act of 2008, the Housing and Economic Recovery Act of 2008, the SAFETEA Act of 2005 that re-wrote America's surface transportation policy, the Check Truncation Act of 2003, the Terrorism Risk Insurance Act of 2002, and the Sarbanes-Oxley Act of 2002.