District Judge, United States District Court, Northern District of Texas
Matthew J. Kacsmaryk serves as United States District Judge for the Northern District of Texas.
He previously served in the (1) private, (2) government, and (3) nonprofit sectors:
Judge Kacsmaryk is an Honors graduate of the University of Texas Law School, where he joined the Federalist Society and served as an Executive Editor of the Texas Review of Law & Politics. Judge Kacsmaryk co-founded the Fort Worth Lawyers Chapter in 2012, coordinated the 2018 Texas Chapters Conference hosted by the Fort Worth Lawyers Chapter, and presently serves on its Advisory Board.
Acting United States Attorney, Northern District of Texas
Nancy E. Larson was appointed Acting United States Attorney for the Northern District of Texas on May 29, 2025.
She is the chief federal law enforcement officer for the district, which covers 96,000 square miles and a population of approximately eight million. Ms. Larson oversees roughly 220 attorneys and staff across five division offices and is responsible for all federal criminal prosecutions and civil litigation involving the United States government in the region.
Ms. Larson has served as an Assistant United States Attorney for more than 30 years. She began her career with the Department of Justice in the District of Columbia, serving as a federal prosecutor in the D.C. United States Attorney’s Office. There, she led successful prosecutions involving homicide, narcotics, violent crime, fraud, and other offenses.
In 1999, Ms. Larson joined the Northern District of Texas as the lead prosecutor for the Housing Fraud Initiative. After serving in the Criminal Division, Ms. Larson was named the Chief of the Appellate Division. She served in that role for over a decade and regularly appeared before the Fifth Circuit on behalf of the United States. Ms. Larson also has served as the district’s Executive Assistant United States Attorney and its Professional Responsibility Officer. Ms. Larson is an accomplished trial lawyer, having represented the United States in more than two dozen criminal trials. During her career, Ms. Larson received numerous awards for her service and leadership.
Ms. Larson is a native of New York and received her J.D. from the University of Virginia School of Law. Ms. Larson’s father, whose father and grandfather served on the NYPD, was a career Special Agent in IRS Criminal Investigations. Her family’s legacy in law enforcement instilled in her a devotion to public service and the cause of justice.
U.S. District Court for the Northern District of Texas
Reed Charles O'Connor is a federal judge on the United States District Court for the Northern District of Texas. He joined the court in 2007 after being nominated by President George W. Bush.
A native of Houston, Texas, O'Connor graduated from the University of Houston with his bachelor's degree in 1986 and from South Texas College of Law with his J.D. in 1989.
District Judge, United States District Court for the Northern District of Texas
Judge Brantley Starr was appointed to United States District Court for the Northern District of Texas in August 2019. Before his appointment, Judge Starr was the Deputy First Assistant Attorney General of Texas. Prior to that appointment, he served as Deputy Attorney General for Legal Counsel. From 2011 to 2015, Judge Starr served as career staff attorney to Texas Supreme Court Justice Eva Guzman. From 2008 to 2011, he practiced at King & Spalding, LLP. He served in the Office of the Solicitor General from 2006 to 2008. Prior to that, Judge Starr clerked for then-Justice Don Willett on the Texas Supreme Court after serving at the Office of the Attorney General. Judge Starr received his law degree from the University of Texas School of Law and his bachelor of arts degree from Abilene Christian University in 2001. Judge Starr has taught the Origins of the Constitution Class at the University of Texas law, Texas A&M law, and SMU law.
District Judge, United States District Court, Northern District of Texas
Matthew J. Kacsmaryk serves as United States District Judge for the Northern District of Texas.
He previously served in the (1) private, (2) government, and (3) nonprofit sectors:
Judge Kacsmaryk is an Honors graduate of the University of Texas Law School, where he joined the Federalist Society and served as an Executive Editor of the Texas Review of Law & Politics. Judge Kacsmaryk co-founded the Fort Worth Lawyers Chapter in 2012, coordinated the 2018 Texas Chapters Conference hosted by the Fort Worth Lawyers Chapter, and presently serves on its Advisory Board.
Acting United States Attorney, Northern District of Texas
Nancy E. Larson was appointed Acting United States Attorney for the Northern District of Texas on May 29, 2025.
She is the chief federal law enforcement officer for the district, which covers 96,000 square miles and a population of approximately eight million. Ms. Larson oversees roughly 220 attorneys and staff across five division offices and is responsible for all federal criminal prosecutions and civil litigation involving the United States government in the region.
Ms. Larson has served as an Assistant United States Attorney for more than 30 years. She began her career with the Department of Justice in the District of Columbia, serving as a federal prosecutor in the D.C. United States Attorney’s Office. There, she led successful prosecutions involving homicide, narcotics, violent crime, fraud, and other offenses.
In 1999, Ms. Larson joined the Northern District of Texas as the lead prosecutor for the Housing Fraud Initiative. After serving in the Criminal Division, Ms. Larson was named the Chief of the Appellate Division. She served in that role for over a decade and regularly appeared before the Fifth Circuit on behalf of the United States. Ms. Larson also has served as the district’s Executive Assistant United States Attorney and its Professional Responsibility Officer. Ms. Larson is an accomplished trial lawyer, having represented the United States in more than two dozen criminal trials. During her career, Ms. Larson received numerous awards for her service and leadership.
Ms. Larson is a native of New York and received her J.D. from the University of Virginia School of Law. Ms. Larson’s father, whose father and grandfather served on the NYPD, was a career Special Agent in IRS Criminal Investigations. Her family’s legacy in law enforcement instilled in her a devotion to public service and the cause of justice.
U.S. District Court for the Northern District of Texas
Reed Charles O'Connor is a federal judge on the United States District Court for the Northern District of Texas. He joined the court in 2007 after being nominated by President George W. Bush.
A native of Houston, Texas, O'Connor graduated from the University of Houston with his bachelor's degree in 1986 and from South Texas College of Law with his J.D. in 1989.
District Judge, United States District Court for the Northern District of Texas
Judge Brantley Starr was appointed to United States District Court for the Northern District of Texas in August 2019. Before his appointment, Judge Starr was the Deputy First Assistant Attorney General of Texas. Prior to that appointment, he served as Deputy Attorney General for Legal Counsel. From 2011 to 2015, Judge Starr served as career staff attorney to Texas Supreme Court Justice Eva Guzman. From 2008 to 2011, he practiced at King & Spalding, LLP. He served in the Office of the Solicitor General from 2006 to 2008. Prior to that, Judge Starr clerked for then-Justice Don Willett on the Texas Supreme Court after serving at the Office of the Attorney General. Judge Starr received his law degree from the University of Texas School of Law and his bachelor of arts degree from Abilene Christian University in 2001. Judge Starr has taught the Origins of the Constitution Class at the University of Texas law, Texas A&M law, and SMU law.
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