BEIJING (AP) — The American Chamber of Commerce in China called Tuesday for more government transparency and fairness as the confidence of U.S. companies in the country's investment climate deteriorates. Over the past year, foreign companies operating in China have faced challenges ranging from anti-monopoly investigations to proposed rules requiring foreign tech companies to hand over proprietary software source codes. Among its recommendations, the white paper suggested the Chinese government make public internal guidelines governing the administration of companies and judicial decisions.