As the nation debates how to establish and operate casinos via integrated resorts, it must take measures to keep the yakuza out and manage not only problem gambling but also develop a responsible drinking policy for the casino floor, a group of U.S. experts said in two new reports.

The conclusions and recommendations were issued by the International Gaming Institute of the University of Nevada, Las Vegas earlier this week. The reports cover the socioeconomic impact of integrated resorts and detail what Japan could learn Nevada's own history with gambling and organized crime.

"The global gaming industry (as well as the general public) is well aware that the yakuza have been active in gambling activities in Japan, which mandates an aggressive approach," the report on organized crime said.