Jon was elected State Representative for the 29th Middlesex District in November 2008. He is a member of the House Committee on Global Warming and Climate Change, the Joint Committee on Children, Families and Persons with Disabilities, the Joint Committee on Election Laws, and the Joint Committee on Public Health. He also serves as House Chair of the Prevention for Health Caucus and as a member of the Mental Health Caucus, the MBTA Caucus, the Fair Skies Caucus and the Trails Caucus.
Born in Cambridge, Jon grew up in Belmont where he attended the public schools. He received his A.B. in History from Stanford University, M.A. in Law and Diplomacy from the Fletcher School at Tufts, and J.D. from Harvard Law School.
After practicing law in New York City, Jon worked from 1990-94 as Program Officer for Human Rights and Governance in the Beijing office of the Ford Foundation. From 1994-98, he was Research Fellow and Lecturer in Law in the East Asian Legal Studies Program at Harvard Law School. In 1999, he co-founded the China Law Center at Yale Law School and served as its Deputy Director until 2006.
In 2005, Jon was elected to the Watertown Town Council, where he chaired committees on budget and fiscal oversight, economic development, and rules and ordinances.
Jon is married to Lora Sabin, a public health economist at Boston University School of Public Health. They have made their home in Watertown for 20 years and have four children attending or graduated from the Watertown public schools.