Complex sentence: Operation Coffee Cup was a campaign by the American Medical Association (AMA) conducted in the late 1950s and early 1960s in order to derail plans by Democrats to extend Social Security to include health insurance for the elderly, later known as Medicare.
Split into simpler sentences: Operation Coffee Cup was a campaign conducted by the American Medical Association (AMA) during the late 1950s and early 1960s. Its goal was to derail the Democrats' plans to extend Social Security to include health insurance for the elderly, later known as Medicare.