Question: The film Citizen Cohn follows the life of a man who was chief counsel to a Senator from which state?

Context paragraphs:
Jennifer Safavian: Jennifer McLaughlin Safavian, was formerly the Chief Counsel for oversight and investigations on the United States Congress House Government Reform Committee, which is responsible for overseeing government procurement.  As of December 16, 2010, she will be the General Counsel of the House Ways and Means Committee and Chief Counsel for the Subcommittee on Oversight.

Roy Cohn: Roy Marcus Cohn ( ; February 20, 1927 – August 2, 1986) was an American attorney.  During Senator Joseph McCarthy's investigations into Communist activity in the United States during the Second Red Scare, Cohn served as McCarthy's chief counsel and gained special prominence during the Army–McCarthy hearings.

Thomas Jipping: Thomas L. Jipping is Chief Counsel to U.S. Senator Orrin Hatch (R-UT) on the Senate Judiciary Committee.  He joined Senator Hatch's legislative office staff in 2003 and was promoted to his Judiciary Committee staff in 2007.  In 2010, he served as Deputy Chief Counsel and Deputy Staff Director of the Senate Impeachment Trial Committee, created to conduct the impeachment trial of U.S. District Judge G. Thomas Porteous.  Prior to his current post, Jipping was Senior Fellow in Legal Studies at Concerned Women for America and, from 1990-2002, Vice-President for Legal Policy and Director of the Center for Law & Democracy at the Free Congress Foundation, where he directed the Judicial Selection Monitoring Project.

Private letter ruling: Private letter rulings (PLRs), in the United States, are written decisions by the Internal Revenue Service (IRS) in response to taxpayer requests for guidance.  A letter ruling, or private letter ruling, is "a written statement issued to a taxpayer by an Associate Chief Counsel Office of the Office of Chief Counsel or by the Tax Exempt and Government Entities Division that interprets and applies the tax laws to a specific set of facts."

Donna Malpezzi: Donna Malpezzi is a prominent attorney in Pennsylvania, where she is chief counsel for Pennsylvania Senate Majority Leader Dominic F. Pileggi.  She also worked as chief counsel for the previous Senate Majority Leader, David J. Brightbill and moved to Pileggi's office after Brightbill was defeated following the 2005 Pennsylvania General Assembly pay raise controversy.  Prior to that, she was an attorney in the office of Senator F. Joseph Loeper.

Citizen Cohn: Citizen Cohn is a 1992 cable film covering the life of Joseph McCarthy's controversial chief counsel Roy Cohn.  James Woods, who starred as Cohn, was nominated for both an Emmy and a Golden Globe for his performance.  "Citizen Cohn" also stars Joe Don Baker (as McCarthy), Ed Flanders (as Cohn's courtroom nemesis Joseph Welch), Frederic Forrest (as writer Dashiell Hammett), and Pat Hingle (as Cohn's onetime mentor J. Edgar Hoover).  It was directed by Frank Pierson.  The movie was filmed on location in Pittsburgh, Pennsylvania.

Robert Charrow: Robert Charrow is an American lawyer and government official.  Currently a shareholder at the law firm of Greenberg Traurig, he is President Donald Trump's nominee to become General Counsel of the United States Department of Health and Human Services.  He previously worked for the law firm of Crowell & Moring.  In the Ronald Reagan administration, Charrow served as Deputy and then Principal Deputy General Counsel for the U.S. Department of Health and Human Services.  In those roles, he supervised the chief counsel for the Health Care Financing Administration, Office of Inspector General, the Food and Drug Administration, and the United States Public Health Service.

Winslow Sargeant: Winslow Sargeant is the sixth Chief Counsel for Advocacy for the Small Business Administration (SBA) and a former venture capital executive with a background in engineering.  He received a recess appointment on August 19, 2010 by U.S. President Barack Obama.  He was unanimously confirmed by the U.S. Senate to be Chief Counsel for Advocacy at the SBA on November 11, 2011.  Sargeant was a managing director at a Madison, Wisconsin-based venture capital firm Venture Investors LLC.  It "provided seed and early-stage money to high-potential health care and IT companies" including Alfalight, TomoTherapy, Third Wave and Promega.

Bradley A. Buckles: Bradley A. Buckles was sworn in as the fifth Director of the Bureau of Alcohol, Tobacco and Firearms (ATF) on December 20, 1999 by Secretary of the Treasury Lawrence Summers.  He previously served as Deputy Director under ATF Director John Magaw from 1996-1999.  He began his service with ATF in 1974 when he joined the ATF Office of Chief Counsel.  He was named Chief Counsel of ATF in 1995.

Joseph McCarthy: Joseph Raymond McCarthy (November 14, 1908 – May 2, 1957) was an American politician who served as U.S. Senator from the state of Wisconsin from 1947 until his death in 1957.  Beginning in 1950, McCarthy became the most visible public face of a period in the United States in which Cold War tensions fueled fears of widespread Communist subversion.  He is known for alleging that numerous Communists and Soviet spies and sympathizers had infiltrated the United States federal government, universities, film industry, and elsewhere.  Ultimately, the smear tactics he used led him to be censured by the U.S. Senate.  The term "McCarthyism", coined in 1950 in reference to McCarthy's practices, was soon applied to similar anti-communist activities.  Today, the term is used in reference to what are considered demagogic, reckless, and unsubstantiated accusations, as well as public attacks on the character or patriotism of political opponents.

Supporting paragraphs: Citizen Cohn Joseph McCarthy
Answer: Wisconsin