The Proposition 8 campaign has filed a federal lawsuit challenging the constitutionality of California laws that require campaign contributors to disclose personal information, claiming donors to the campaign have been threatened.

The suit, filed Wednesday in U.S. District Court in Sacramento, cites numerous examples of threatening e-mails, phone calls and postcards – including death threats – allegedly made by opponents of the November ballot measure that banned same-sex marriage in the state.

Ron Prentice, chairman of the Yes on 8 campaign, charged the harassment was made possible by the state's "unconstitutional campaign finance disclosure rules."

California's Political Reform Act, which voters approved in 1974, requires the name, occupation and employer of any individual who makes a campaign contribution of $100 or more.

Read the fullstory at sac.bee.com