ACORN,the Association of Community Organizations for Reform Now, faces still another high-stakes challenge — and more embarrassment — in Nevada, where it has been charged with 13 felony counts related to potential voter registration fraud during the 2008 campaign. This is the only state where ACORN, as an organization, is accused of criminal wrongdoing. Similar investigations in Pennsylvania and Florida have resulted in charges against individual canvassers the group hired to register voters. “With ACORN, one wonders how it could get worse for them,” said Tom Fitton, president of Washington-based Judicial Watch, a conservative government watchdog group that has been...