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January 26, 2016
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Charities Urged to Watch Donor-Anonymity Legal Challenges

left to right: Rabbani and Solimene Photography/Getty Images; Patrick T. Fallon/The Washington Post/Getty Images

David and Charles Koch are key supporters of the Americans for Prosperity Foundation, which has filed a lawsuit against California that raises fundamental questions about what states have a right to know about donors.

Americans for Prosperity Foundation, a charity that promotes free-market economics and limited government, says two of its key supporters have faced horrific threats from social media, phone calls, and email.

On Twitter: "Can someone assassinate...

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