U.S. Supreme Court weighs conservative groups' bid to conceal donors

The U.S. 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 U.S. 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....