Final answer:
President George Bush was in office when Medicare Part D was enacted in 2003.
Step-by-step explanation:
President George Bush was in office when Medicare Part D was enacted. In 2003, Congress passed and President George Bush signed into law a substantial expansion of Medicare that helped the elderly to pay for prescription drugs. The prescription drug benefit cost the federal government about $40 billion in 2006, and the Medicare system projected that the annual cost would rise to $121 billion by 2016.