Inspired by Ronald Reagan and funded by the right’s richest donors, a web of free-market think tanks has fueled the nationwide attack on workers’ rights.

Founded in 1992 by businessman and Reagan administration insider Thomas Roe—who also served on the Heritage Foundation’s board of trustees for two decades—the group has grown to include 59 “freedom centers,” or affiliated think tanks, in all 50 states.

SPN’s board includes officials from Heritage and right-wing charities such as the Adolph Coors and Jacqueline Hume foundations. Likewise, its deep-pocketed donors include all the usual heavy-hitting conservative benefactors: the Ruth and Lovett Peters Foundation, which funds the Cato Institute and Heritage; the Castle Rock Foundation, a charity started with money from the conservative Coors Foundation; and the Bradley Foundation, a $540 million charity devoted to funding conservative causes. SPN uses their contributions to dole out annual grants to member groups, ranging from a few thousand dollars to $260,000, according to 2009 records.