Member, Watertown Democratic Town Committee

Representative, Commonwealth of Massachusetts House of Representatives, District Twenty-Ninth Middlesex, 2008-2021

Candidate, Commonwealth of Massachusetts State House of Representatives, District Twenty-Ninth Middlesex, 2018

Member, Watertown Town Council, 2005

Former Member, Elder Affairs Committee, Massachusetts State House of Representatives

Former Member, Global Warming and Climate Change Committee, Massachusetts State House of Representatives

Former Member, Joint Committee on Children, Families and Persons with Disabilities, Commonwealth of Massachusetts House of Representatives

Former Member, Joint Committee on Municipalities and Regional Government, Commonwealth of Massachusetts House of Representatives

Former Member, Joint Committee on Public Health, Commonwealth of Massachusetts House of Representatives

Former Member, Joint Committee on Transportation, Commonwealth of Massachusetts House of Representatives

Former Member, Joint Election Laws Committee, Massachusetts State House of Representatives

Member, Local Government Advisory Commission

Co-Founder/Deputy Director, China Law Center at Yale Law School, 1999-2006

Research Fellow and Lecturer in Law, Harvard Law School East Asian Legal Studies Program, 1994-1998

Program Officer, Ford Foundation Beijing Office, Human Rights and Governance, 1990-1994

Member, Appalachian Mountain Club

Former Board Member, Arsenal Center for the Arts

Member, Arsenal Center for the Arts

Member, Friends of Mount Auburn Cemetery

Member, Historical Society of Watertown

Board of Directors, Massachusetts Municipal Association

Member, National Committee on United States-China Relations

Former President, Watertown Community Foundation