What was the main purpose of the health maintenance organization act of 1973?

The Health Maintenance act of 1973 is also known as the Federal HMO Act was a  federal law. It's aim was development of health maintenance organizations. The bill was signed by President Richard Nixon. The act provided grants to start a Health Maintenance Organization,  and removed state restrictions for Federal HMO's. Under the act the employers with twenty-five or more than twenty-five employees had t provide certified HMO options. Individual HMO's were provided an endorsement from the federal government. One drawback of the act was that it was delayed in implementation.