HMOs' federal mandate may face legal challenge.
D003098:Collective Bargaining / Q000331:legislation & jurisprudence*; D006264:Health Benefit Plans, Employee / Q000331:legislation & jurisprudence*; D006279:Health Maintenance Organizations / Q000331:legislation & jurisprudence*; D007348:Insurance, Health / Q000331:legislation & jurisprudence*; D009518:New York; D014481:United States