21st-century American economists

Martin Stuart Feldstein ( FELD-styne; November 25, 1939 – June 11, 2019) was an American economist. He was the George F. Baker Professor of Economics at Harvard University and the president emeritus of the National Bureau of Economic Research (NBER). He served as president and chief executive officer of the NBER from 1978 to 2008 (with the exception of 1982 to 1984). From 1982 to 1984, Feldstein served as chairman of the Council of Economic Advisers and as chief economic advisor to President Ronald Reagan (where his deficit hawk views clashed with the Reagan administration's large military expenditure policies). Feldstein was also a member of the Washington-based financial advisory body the Group of Thirty from 2003.

Gregory Clark (born 19 September 1957) is a British economic historian who worked mostly at University of California, Davis and is now the Danish National Research Council professor of economics at the University of Southern Denmark. He is known for his economic research on the industrial revolution and social mobility.