The U.S. Supreme Court's seminal 1978 Bakke decision, now 25 years old, has an ambiguous and endangered legacy. Justice Lewis Powell's opinion provided a justification that allowed leaders in medical education to pursue some affirmative action policies while at the same time undermining many other potential defenses. Powell asserted that medical schools might have a "compelling interest" in the creation of a diverse student body. But Powell's compromise jeopardized affirmative action since it blocked many justifications for responding to increases in (...) political opposition and legal challenges. The Bakke decision and itsmoral background and legal legacy are traced and analyzed. Despite recent legal setbacks, the framework sketched by Powell can be used to defend diversity inmedical education bothmorally and legally as a "compelling state interest." Because trust is a central component of the physician-patient relationship and a prerequisite to the profession's ability to provide effectivemedical care, the state has a compelling interest in training physicians with whom patients can feel comfortable and safe if the population is distrustful; underserved; faces significant discrimination in the allocation of benefits, goods and services and affirmative action programs would be likely to promote their trust in the system. Similar narrowly-tailored arguments could be used in other professions and for other groups. Bakke is an important background for the pending Grutter case. (shrink)