Gary D. Cohn
He previously served as president and chief operating officer of The Goldman Sachs Group, Inc., was a member of the management committee and board of directors and was chairman of the firmwide client and business standards committee.
Cohn, a registered Democrat, has been a long-time proponent of free trade and was known to have argued frequently with Trump over his “America First” approach to trade. At one point, he was part of a more moderate coalition of staff members of the Trump administration who pushed to preserve workplace rights for gay, lesbian, bisexual and transgender people. He also pushed Trump to remain in the Paris climate accord, a fight he ultimately lost.
He is also credited with shepherding the Trump administration's tax overhaul through Congress. 
Cohn's grandfather was a Polish immigrant who moved to the US on his own at the age of 13 with $8 in his pocket. He worked as an apprentice electrician, and later ended up opening his own business, for which Cohn worked as a youngster. Cohn grew up in Cleveland in the 1960s in a middle-class family. His first job in the world of finance was as a runner on the floor of the New York Stock Exchange. 
Before joining Goldman Sachs, he was a director of the London Metal Exchange and a member of the board of directors and the executive committee of the New York Mercantile Exchange and the Commodity Exchange.
Goldman Sachs recruited him in 1990, and he made partner in 1994.
During his 26-year career at Goldman, Cohn held a number of leadership positions in the firm’s securities division in New York and in London. Before becoming CEO, he served as the co-chief operating officer of Fixed Income, Currency and Commodities (FICC) after having been responsible for commodities and a number of other FICC business from 1996 through 2002. He was the co-head of the global securities businesses from December 2003 to June 2006.
Cohn also serves as trustee of the NYU Langone Medical Center, the Harlem Children’s Zone in New York City and American University in Washington, DC. as well as chairman of the advisory board of the NYU Hospital for Joint Diseases in New York City.
Cohn graduated from American University.
- Trump Confronted Cohn on Trade Hours Before Resignation, Sources Say. Goldman Sachs Group.
- Gary Cohn Says He Will Resign as Trump’s Top Economic Adviser. New York Times.
- Gary Cohn Says He Will Resign as Trump's Top Economic Adviser. The New York Times.
- Why Wall Street loved Gary Cohn inside the White House. CNN Money.
- The rise of Gary Cohn, from Midwestern kid to Goldman Sachs boss — and now adviser to President Trump. Business Insider.
- Gary D. Cohn. Goldman Sachs Group.