You haven’t heard of Donors Trust, but it’s bankrolled the right’s fights against unions, public schools, climate scientists, and more.

Working out of an nondescript brick rowhouse in suburban Virginia, a little-known organization named Donors Trust, staffed by five employees, has steered hundreds of millions of dollars to the most influential think tanks, foundations, and advocacy groups in the conservative movement. Over the past decade, it has funded the right’s assault on labor unions, climate scientists, public schools, economic regulations, and the very premise of activist government. Yet unlike its nearest counterpart on the progressive side, the Tides Foundation, a bogeyman of Glenn Beck and Bill O’Reilly, Donors Trust has mostly avoided any real scrutiny. It is the dark-money ATM of the right.

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