The American Medical Association is no longer the behemoth of the profession that it was in the 1950s, when some 90 percent of all physicians in the US held membership, and the AMA was the major power in health-care politics. With the proliferation of specialty societies, AMA membership has fallen to about 40 percent of the physician workforce. And its political prowess has declined as the federal government, insurers, managed care and giant health-care corporations have crowded into the field.
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