In 1994, Kennedy was elected as a Democrat to represent the 1st Congressional District of Rhode Island. He was re-elected seven times, serving from January 3, 1995, to January 3, 2011 (the 104th to 111th Congresses).  In the House, Kennedy served on the Armed Services and Natural Resources Committees before being appointed to the Appropriations Committee.  Kennedy was lead sponsor of the Mental Health Parity and Addiction Equity Act, which passed on October 3, 2008.  Kennedy authored and co-sponsored the Positive Aging Act, the Foundations for Learning Act, which established a grant program to improve mental and emotional health for school children through screening and early intervention, the National Neurotechnology Initiative Act, Genomics and Personalized Medicine Act; the COMBAT PTSD Act; the Nurse-Family Partnership Act, the Alzheimer's Treatment and Caregiver Support Act, and the Ready, Willing, and Able Act  Kennedy was among the founders of the Congressional Down Syndrome Caucus and the 21st Century Healthcare Caucus and served as vice chairman of the Native American Caucus. He also joined the Congressional Boating Caucus; the Caucus on Armenian Issues; the Caucus on Hellenic Issues; the Fire Services Caucus; the Human Rights Caucus; the Travel and Tourism Caucus; the National Guard and Reserve Components Caucus; the Portuguese American Caucus (co-chair); and the Older American Caucus. He was a founder of the Rhode Island Chapter of the National Committee for Prevention of Child Abuse and chaired the Democratic Congressional Campaign Committee for two years (1999-2001). During his tenure as DCCC chairman, Kennedy became a headliner at Democratic political events and fundraisers around the country.

Answer this question "what legislation he was known for?" by extracting the answer from the text above.
Kennedy was lead sponsor of the Mental Health Parity and Addiction Equity Act,