Representative, Illinois State House of Representatives, District 82, 2023-present

Representative, Illinois State House of Representatives, District 82, 1995-2002, 2006-2023

Republican Leader, Illinois State House of Representatives, 2013-2023

President, Proviso Township Republican Organization, 1991-2023

Candidate, Illinois State House of Representatives, District 82, 2022

Candidate, Illinois State House of Representatives, District 82, 2020

Assistant Minority Leader, Illinois State House of Representatives, 2013

Chair, Illinois Delegation, Republican National Convention, 2008

State Chair, United States Senator John McCain for President, 2000, 2008

Candidate, United States Senate, 2002

Trustee, Triton Community College, 1991-1995

Former Member, Environment Committee, Illinois State House of Representatives

Former Ranking Minority Member, Investigative Committee, Illinois State House of Representatives

Former Member, Mass Transit Committee, Illinois State House of Representatives

Former Member, Public Utilities Committee, Illinois State House of Representatives

Former Member, Redistricting Committee, Illinois State House of Representatives

Former Member, Tollway Oversight Committee, Illinois State House of Representatives

Ranking Member, Special Investigation Committee for the Impeachment of Governor Blagojevich, Illinois State House of Representatives, 2008

Attorney, Pretzel & Stouffer, Limited, 1995-present

Assistant State's Attorney, Cook County Government, 1991-1995

Assistant Attorney General, State of Illinois, 1989-1990

Member, Board of Advisors, Misericordia Home, present

Member, Board of Directors, Juvenile Diabetes Research Foundation; Illinois, present

Member, Board of Managers, Chicago Bar Association, present

Member, Board of Trustees, John Marshall Law School, present

Member, Illinois Board of Directors, Giant Steps School of Autism, present

Former Vice-Chair, Board of Trustees, Triton Community College