The Mansfield Amendment refers to a series of legislative provisions, most notably those introduced by Senator Mike Mansfield, that placed restrictions on military funding for research. Michael Joseph Mansfield (1903-2001) was a Democratic politician who represented Montana in the U.S. House of Representatives (1943-1953) and Senate (1953-1977), also serving as the U.S. Ambassador to Japan (1977-1988).
The Mansfield Amendment of 1969, part of the 1970 Military Authorization Act, prohibited the Department of Defense from funding research lacking a direct and apparent connection to a specific military function. This amendment shifted the focus of the Department of Defense toward supporting short-term, applied research at universities. A subsequent amendment in 1973 further limited defense research appropriations through the Advanced Research Projects Agency (ARPA, now DARPA) to projects with direct military applications. It is suggested that the "brain drain" resulting from these restrictions may have inadvertently boosted the development of the personal computer industry, as some computer scientists left universities for startups and private research labs.
