Over the course of his career, Mark Weinberger has played an important role at government agencies and private companies alike, specifically leading activities in the areas of tax management and advisory services. Beginning his career as a member of the national tax department at Ernst & Young (EY) , Mark Weinberger went on to serve as chief tax and budget counsel for Senator John Danforth of Missouri. At the end of this period, Weinberger was appointed Chief of Staff to President Bill Clinton’s Bipartisan Commission on Entitlement and Tax Reform, on which he performed as chief of staff.
Returning to the private sector in 1996, Mark Weinberger cofounded Washington Counsel, a law and legislative advisory firm which merged into EY four years later. Following a term as director of the US national tax practice at EY, Weinberger accepted an appointment from President George W. Bush as assistant secretary of the treasury for tax policy. Again rejoining EY in 2002, he has since served as Americas deputy vice chair of tax services, global vice chair of tax, and chairman and CEO-elect. He will formally assume responsibilities as chairman and CEO in July 2013.