Las Vegas and Reno were the only legal full-time gambling areas in the country 20 years ago, but now there are more than 200 legal casinos across the country, including Native American operations and riverboats. Casino U.S.A . evaluates all in terms of decor, customer care, food, services, and hotel arrangements, as well as tariffs, accessibility, and gaming regulations. Vacationers will find all the best places in these pages.