WASHINGTON (AP) - A retired GOP state legislator said Tuesday he'll run against Sen. Dianne Feinstein, D-Calif., when she seeks a third full term next year. Richard Mountjoy of Monrovia, Calif., who served in the state Assembly and Senate for more than two decades before term limits forced him out in 2000, is the only Republican who has announced plans to challenge Feinstein. Software executive Bill Mundell explored the idea before taking his name out of contention in November. Feinstein, 72, who has emerged in some polls as California's most popular politician, is heavily favored for re-election in the Democratic-leaning...