Complex sentence: After graduate school, he worked as a legislative aid to the late Senator Edward Kennedy on the United States Senate Committee on Health, Education, Labor, and Pensions, where he served as floor staffer during the 2003 Medicare prescription drug debate.
Split into simpler sentences: After graduate school, he worked for the late Senator Edward Kennedy as a legislative aid on the United States Senate Committee on Health, Education, Labor, and Pensions. He served as floor staffer during the 2003 Medicare prescription drug debate.