For decades, Mary Jo Rossi has been either a friend or a foe to Contra Costa County’s business and political spheres.

FBI agents raided the home of longtime East Bay political strategist Mary Jo Rossi this week, according to federal officials.

CONCORD — The FBI raided the home of the influential and often-victorious political consultant Mary Jo Rossi, drawing immediate speculation as to which — if any — of her many friends in ...

CONCORD — For decades, Mary Jo Rossi has been either a friend or a foe to Contra Costa County’s business and political elite, excoriating her opponents, ardently defending her friends and ...