The US Supreme Court on Monday is set to hear arguments in a challenge by two conservative groups to a California requirement that tax-exempt charities disclose to the state the identity of their top financial donors.
The nonprofit groups – the Americans for Prosperity Foundation and the Thomas More Law Center – argued that California’s policy violated the US Constitution’s First Amendment guarantees of freedom of speech and association. They argued that if the information were to be made public it could lead to harassment or threats to their donors.
The Thomas More Law Center is a conservative Catholic legal group. The Americans for Prosperity Foundation, which funds education and training on conservative issues, is the sister organization of Americans for Prosperity, a conservative political advocacy group – both founded by conservative billionaire businessman Charles Koch and his late brother David.
Democratic-governed California, the most populous US state, has said the donor information is required from such groups as