From TFA.
The Manhattan Institute (MI) is a right-wing 501(c)(3) non-profit think tank founded in 1978 by William J. Casey, who later became President Ronald Reagan's CIA director.[1] It is an associate member of the State Policy Network....
The Manhattan Institute has received funding from the Koch brothers. The Claude R. Lambe Foundation, one of the Koch Family Foundations, reported giving $2,075,000 to the Manhattan Institute between 2001 and 2012, the last year for which data is available. The Charles G. Koch Foundation gave $100,000 to the Institute in 2012.
https://www.sourcewatch.org/index.php?title=Manhattan_Instit...