Aug. 13 (Bloomberg) --Arnold Schwarzenegger, the actor who is running for governor of California, said billionaire investor Warren Buffett will be the financial and economic adviser to his political campaign, the campaign said in a statement. Buffett, the world's second-richest man, has built a fortune buy buying companies through his company, Berkshire Hathaway Inc. Debbie Bosanek, Buffett's assistant, didn't immediately return a phone call seeking comment.