Senator, Maryland State Senate, District 21, 2007-present

Candidate, Maryland State Senate, District 21, 2022

Deputy Majority Whip, Maryland State Senate, 2008-2016, 2017-2019

Candidate, Maryland State Senate, District 21, 2018

Assistant Deputy Majority Whip, Maryland State Senate, 2007-2011

Delegate, Maryland State House of Delegates, District 21, 1987-1997

Vice Chair, Budget and Taxation Committee

Member, Cybersecurity, Information Technology and Biotechnology Committee

Member, Executive Nominations Committee

Member, Joint COVID-19 Response Legislative Working Group

Member, Senate Vaccine Oversight Working Group

Member, Special Joint Committee on Pensions

Member, Spending Affordability Committee

Member, Subcommittee on Capital Budget

Member, Subcommittee on Pensions

Member, Subcommittee on Public Safety, Transportation, and Environment

Former Member, Commission on Maryland Retirement Security and Savings, Maryland State Senate

Former Member, Comptroller Issues Subcommittee of the Education, Health and Environmental Affairs Committee, Maryland State Senate

Former Member, Education Subcommittee of the Education, Health and Environmental Affairs Committee, Maryland State Senate

Former Member, Education, Health, and Environmental Affairs Committee, Maryland State Senate

Former Co-Chair, Environment Subcommittee of the Education, Health and Environmental Affairs Committee, Maryland State Senate

Former Member, Ethics and Election Law Subcommittee of the Education, Health and Environmental Affairs Committee, Maryland State Senate

Former Member, Finance Committee, Maryland State Senate

Former Member, Joint Advisory Committee on Legislative Data Systems, Maryland General Assembly

Former Member, Joint Audit Committee, Maryland State Senate

Former Member, Joint Committee on Base Realignment and Closure, Maryland State Senate

Former Co-Chair, Joint Committee on Cybersecurity, Information Technology and Biotechnology, Maryland State Senate

Former Member, Joint Committee on Federal Relations, Maryland General Assembly

Former Senate Chair, Joint Committee on the Management of Public Funds, Maryland General Assembly

Former Senate Chair, Joint Information Technology and Biotechnology Committee, Maryland General Assembly

Former Chair, Joint Technology Oversight Committee, Maryland State Senate

Former Member, Subcommittee on Public Safety, Transportation, and Environment, Maryland State Senate

Former Vice Chair, Ways and Means Committee, Maryland State House of Delegates

Co-Author, "Dracula is Dead: How Romanians Survived Communism, Ended It, and Emerged since 1989 as the New Italy", 2009

United States Ambassador to Romania, 1998-2001

Member, Workgroup to Study the Transformation in Maryland's Emerging Digital Economy, 2021-present

Member, Educational Development Specifications Workgroup, 2018-present

Member, Prince George's County School Construction Master Plan Work group, 2018-present

Member, Prince George's County Utility Services Use of Master Meters and Task force, 2018-present

Member, Prince George's County Surcharge Exemptions for Projects Near Transit Properties Workgroup, 2017-present

Member, Commission to Modernize State Procurement, 2016-present

Member, Maryland Small Business Retirement Savings Board, 2016-present

Member, Task Force to Study a Promise Scholarship Program in Prince George's County, 2016-present

Member, Climate, Energy and Environment Policy Committee, Metropolitan Washington Council of Governments, 2011-present

Member, Communications, Financial Services and Interstate Commerce Committee, National Conference of State Legislatures, 2007-present

Member, Baltimore Council on Foreign Affairs Board of Trustees

Member, Friends of Agricultural Research

Member, Order of Sons of Italy

Member, Governor's Task Force to Ensure Retirement Security for All Marylanders, 2014-2015

Member, Maryland Advisory Council for Virtual Learning, 2012-2015

Member, Task Force on the Establishment of a Statewide Spay/Neuter Fund, 2011-2012

Chair, Task Force on Solar Hot Water Systems in Prince George's County, 2010-2011

Member, Task Force on the Preservation of Heritage Language Skills in Maryland, 2008-2009

Member, Task Force to Improve Child Support Compliance in Prince George's County, 2007-2008

Member, Board of Regents, University System of Maryland, 2001-2006

Chair, Prince George's County Substance Abuse Advisory Council, 1991-1994

Member, Prince George's Economic Development Advisory Committee, 1985-1993

Member, Board of Directors, National Small Business United, 1986-1992

Deputy Chair, Maryland Democratic Party, 1989-1992

Member, Maryland Democratic Party, 1989-1992

Member, Maryland State Democratic Central Committee, 1985-1992

Member, Advisory Board, Center for National Policy, 1986-1991

Treasurer, Maryland Democratic Party, 1985-1989

Chair, College Park Economic Development Committee, 1983-1986

Member, Advisory Council, Maryland Committee on Federal Income Tax Conformity, 1982