Delegate, Maryland State House of Delegates, District 23A, 1992-2014

Assistant Majority Leader, Maryland State House of Delegates, 2007-2014

Vice-Chair, Washington Suburban Sanitary Commission Committee (WSSC), Prince George’s County Delegation, 2011-present

Member, Maryland Veterans Caucus, 2005-present

Member, Chesapeake Bay Commission, 2002-present

Member, Children's Environmental Health and Protection Advisory Council, 2000-present

Member/Co-Founder, Maryland Green Caucus, 1996-present

Member, Metropolitan Washington Air Quality Committee, Metropolitan Washington Council of Governments, 1995-present

Member, Board of Directors Executive Committee, Prince George's Private Industry Council, 1984-present

Member, Agriculture and Energy Committee, National Conference of State Legislatures, 2008-present

Member, Domestic Violence Coordinating Council, Prince George's County

Member, Domestic Violence Task Force, Prince George's County

Member, Environment Committee, National Conference of State Legislatures, 2008-present

Member, Health Committee, National Conference of State Legislatures, 2011-present

Member, Joint Committee on Health Benefit Exchange Financing, 2012-present

Member, Maryland Bicycle and Pedestrian Caucus, 2005-present

Co-Founder/Chair, National Caucus of Environmental Legislators

Co-Chair, Task Force to Study Financial Matters Relation to Long-Term Care Facilities, 2008-2012

Vice-Chair, Chesapeake Bay Commission, 2011

Member, Joint Committee on Children, Youth, and Families, Maryland State House of Delegates, 2003-2011

Member/Public Health, Safety Net, and Special Populations Work Group Co-Chair, Maryland Health Care Reform Coordination Council, 2010

Member, Washington Suburban Sanitary Commission Committee, Prince George’s County Delegation, 2008-2010

Member, Agriculture, Environment and Energy Committee, National Conference of State Legislatures, 2007-2008

Member, County Affairs Committee, Prince George’s County Delegation, 1999-2008

Chair, Chesapeake Bay Commission, 2007

Chair, Environment and Natural Resources Committee, National Conference of State Legislatures, 2005-2007

Chair, House Work Group to Study Maryland Law Regarding Access to Firearms and Sharing of Health Information, 2007

House Chair, Joint Legislative Task Force on Universal Access to Quality and Affordable Health Care, 2005-2007

Member, Health Occupations Subcommittee, Maryland State House of Delegates, 2003-2005

Member, Minority Health Disparities Subcommittee, Maryland State House of Delegates, 2005

Member, Public Health Subcommittee, Maryland State House of Delegates, 2003-2005

Chair, Public Health Subcommittee, Maryland State House of Delegates, 2004-2005

Member, Chesapeake Bay Watershed Blue Ribbon Panel, Chesapeake Executive Council, 2004

Member, Government Operations Subcommittee, Maryland State House of Delegates, 2003-2004

Member, Agriculture, Environment, and Natural Resources Subcommittee, Maryland State House of Delegates, 2002-2003

Member, Environmental Matters Committee, Maryland State House of Delegates, 1992-2003

Member, Health Subcommittee, Maryland State House of Delegates, 1999-2003

Member, Joint Committee on Administrative, Executive and Legislative Review, Maryland State House of Delegates, 1995-2003

Member, Public Utilities Subcommittee, Maryland State House of Delegates, 1999-2002

Member, Commission on Funding and Services for Gifted and Talented Student Education in Maryland, 2000-2001

Member, Commission on Funding and Services for Gifted and Talented Student Education in Maryland, 2000-2001

Member, Advisory Council on Environmental Justice, 1997-1999

Member, Health and Public Utilities Subcommittee, Maryland State House of Delegates, 1995-1999

Member, Task Force on the Privatization of the Washington Suburban Sanitary Commission, 1998-1999

Co-Founder, Maryland Green Caucus, 1996

Member, Investigation Committee, Maryland State House of Delegates, 1994

Member, Maryland Commission for Women, 1984-1987

Member, Task Force on Employment and Vocational Opportunities for Disabled Youth and Adults of Prince George's County Council, 1984-1987

Member, Child Support Enforcement Advisory Council, 1983-1985

Chair, Commission for Women, Prince George's County, 1981-1982

Executive Assistant to Deputy Director, Department of Corrections, Prince George's County, 2003-present

Former Lieutenant Colonel/Assistant Sheriff, Prince George's County

Life Director/Founder, Family Crisis Center of Prince George's County

Member, University of Maryland Alumni Association

Member, Alumni and Program Committee, Leadership Washington Class of, 1986-1987