ALSO. . .

Colorado became the 34th state to file a lawsuit against seven of the largest U.S. tobacco companies, seeking damages for tobacco-related medical costs. . . . American Express Co., based in New York, hoping to further tap voracious demand for consumer credit in Brazil, is expected to announce Monday an agreement with one of the country’s largest banks, Banco Excel Economico, to peddle its credit cards there. The deal is part of American Express’ plans to expand outside the U.S., where most banks that issue Visa and MasterCard are barred from taking on American Express. . . . New York’s American International Group Inc. said it appealed a California judge’s decision approving the sale of San Diego-based Golden Eagle Insurance Co. to Boston-based Liberty Mutual Group. . . . Cincinnati-based Procter & Gamble Co. said it won antitrust clearance from the Justice Department to complete its $2-billion acquisition of Tambrands Inc., based in White Plains, N.Y. . . . Switzerland’s Novartis faces an antitrust investigation tied to the firm’s $36-million investment in Heska Corp., a Colorado firm that is using biotechnology to develop vaccines for pets. The Federal Trade Commission requested information from the two companies on competition in the market for flea-control products, according to a regulatory filing by Heska.