Health systems of the United States have differences with several countries around the world and is the only country in the developed countries who do not have health insurance system for all people.Moreover, access to medical systems of the people of the United States. Are invaluable in obtaining services, sequins that vary according to the individual's health insurance policy. Currently Americans can log on to health insurance through 3 channels (the vast majority of Americans will live in one of the health insurance system): the Government is a private company, insurance employment, insurance and purchase policy is health insurance yourself.