Regan, Donald Thomas definition of Regan, Donald Thomas in the Free Online Encyclopedia.

Regan, Donald Thomas (rē`gən), 1918–2003, U.S. government official and financier, b. Cambridge, Mass. A graduate of Harvard (B.A. 1940), he went to work (1946) at a brokerage house that became Merrill Lynch after serving as a Marine officer in World War II. Regan rose through the company to become its youngest president in 1968 and chief executive in 1973, transforming the firm into a publicly owned financial services company. A long-time Republican, he was active in Ronald Reagan Reagan, Ronald Wilson (rā`gən), 1911–2004, 40th president of the United States (1981–89), b. Tampico, Ill.
..... Click the link for more information. 's presidential campaign and became (1981) his Treasury secretary and a strong advocate of supply-side economics supply-side economics, economic theory that concentrates on influencing the supply of labor and goods as a path to economic health, rather than approaching the issue through such macroeconomic concerns as gross national product.
..... Click the link for more information. , tax cuts, government cutbacks, and deregulation. In 1985 he became White House chief of staff, a post in which he wielded great power. As revelations concerning the Iran-contra affair Iran-contra affair, in U.S. history, secret arrangement in the 1980s to provide funds to the Nicaraguan contra rebels from profits gained by selling arms to Iran.
..... Click the link for more information. hurt the president's image, the first lady blamed Regan and worked to force him out. Regan resigned in 1987 and wrote For the Record (1988), in which he attacked Nancy Reagan; she shot back in My Turn (1989).