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U.S. Attorney Jennifer Lowery is leading the SDTX with First Assistant U.S. Attorney and Criminal Division Chief Ted Imperato, Executive Assistant U.S. Attorrney Krystal Walker and Executive Assistant U.S. Attorney Keith Wyatt along with Civil Division Chief Daniel Hu and Appellate Chief Carmen Mitchell

Read below to learn more about them.

Criminal Chief Jennifer Lowery

Jennifer Lowery

United States Attorney

Lowery joined the Southern District of Texas (SDTX) in 2008, but has been with the Department of Justice since 2000. While with the SDTX, Lowery has served as Assistant U.S. Attorney (AUSA) in the Major Offenders, Fraud and Organized Crime Drug Enforcement Task Force Sections. She has also held the titles of First Assistant USA, Executive AUSA, criminal chief, deputy criminal chief of the Program Fraud Section, acting deputy criminal chief of the Major Fraud Section, senior litigation counsel and ethics advisor.

More information about her is located on the USA page.

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FAUSA and Crimimal Chief Ted Imperato

Ted Imperato

First Assistant U.S. Attorney and Chief – Criminal Division

Imperato began his career with the SDTX in 2003. Since that time, he has served as an AUSA in Violent Crimes, Narcotics Enforcement, Organized Crime Drug Enforcement Task Force/Organized Crime and National Security/Public Corruption sections. In 2016, he became the deputy criminal chief of the National Security and Public Corruption section. He has been the Criminal Chief since December 2020.

Prior to joining the U.S. Attorney’s Office (USAO)-SDTX, Imperato was with the Montgomery County Prosecutor’s Office in Ohio for seven years. He has received numerous accolades and case commendations during his tenure with the Department of Justice to include the FBI, Bureau of Alcohol, Tobacco and Firearms, Drug Enforcement Administration and Department of State - Diplomatic Security Service. Imperato was also awarded the Houston Police Department’s Chief of Police Commendation.   

Imperato holds a B.S. in Accounting from Providence College and a J.D. from the University of Dayton School of Law. 

He is licensed to practice in Texas. 

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Krystal Walker

Krystal Walker

Executive Assistant U.S. Attorney

Walker joined the office in 2016. Since then, she has served as an AUSA in both the Civil and Criminal Divisions, prosecuting white collar crimes and defending the United States and its agencies in employment discrimination, civil immigration and Federal Torts Claims Act cases. She has also served on a detail assignment to the General Counsel’s Office for the Executive Office of U.S. Attorneys. Walker previously served as an AUSA in the U.S. Attorney’s Office for the Northern District of Mississippi. 

Prior to joining the Department of Justice, Walker was a law clerk for U.S. District Judge Michael P. Mills in the Northern District of Mississippi, U.S. Magistrate Judge Michael T. Parker in the Southern District of Mississippi and U.S. District Judge Debra M. Brown in the Northern District of Mississippi. Before her clerkships, she practiced insurance defense and family law in the private sector.  

She holds a Bachelor of Accountancy, cum laude, from Mississippi State University and a Juris Doctor, cum laude, from the University of Mississippi School of Law.

Walker is licensed to practice in all state courts of Mississippi, Tennessee and New York as well as before the U.S. Supreme Court, U.S. Court of Appeals for the Fifth Circuit and U.S. District Courts for the Southern District of Texas, Northern District of Mississippi and Southern District of Mississippi.

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Keith Wyatt

Keith Wyatt

Executive Assistant U.S. Attorney

Wyatt has served as an AUSA in the Civil Division from 1984 to 1989 and again from 1995 to 2021. He was Civil Chief from 1999 to 2016 and was a founding member of the SDTX’s Civil “Civil” Rights Section. In addition to his role as Executive AUSA, he is also the SDTX’s Civil Rights Coordinator for Civil Litigation.

Wyatt has practiced on both sides of the bar. On the defensive side, he has litigated multi-million dollar lawsuits in federal and state court involving personal injury, employment discrimination, constitutional torts (Bivens) and many others. He has argued appeals before the Fifth Circuit Court of Appeals and the 14th Court of Civil Appeals. On the plaintiff side, Wyatt has handled affirmative civil rights matters including enforcing the rights of individuals with disabilities under the Americans with Disabilities Act (ADA), the rights of individuals under Title VII of the Civil Rights Act and the rights of military reservists under the Uniformed Services Employment and Reemployment Rights Act (USERRA).

Wyatt previously was an Assistant City Solicitor in Philadelphia, Pennsylvania, and a Senior Litigation Specialist for American International Group (AIG).

Wyatt holds a B.A. degree from the University of Pittsburgh in Pennsylvania and a J.D. degree from Temple Law School in Philadelphia.

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Civil Chief Daniel Hu

Daniel Hu

Chief – Civil Division

Hu began his career with the SDTX in 1992. Since that time, he has served in the Civil Division as an AUSA, but has also handled criminal cases and argued appeals at the U.S. Courts of Appeals for the Fifth Circuit and the Federal Circuit. Prior to becoming the chief of the Civil Division in 2016, he served as its deputy chief.

In 2008, Hu led the first Border Fence condemnation team which dealt with 54 miles of land. From 2014-16, he was part of the team handling Texas v United States, the nationally-recognized case challenging the Deferred Action for Childhood Arrivals immigration policy.

Prior to serving as an AUSA, he was in private practice and was a law clerk to U.S. District Judge Norman W. Black.

Hu is currently on the board of the Houston Asian American Bar Association and council for the State Bar of Texas Asian Interest Section. He is a past president of the Federal Bar Association - SDTX Chapter, past director of the State Bar of Texas and past Commissioner on the Texas Access to Justice Commission.

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Appellate Chief Carmen Mitchell

Carmen Mitchell

Chief – Appellate Division

Mitchell began her career with the SDTX in 2008. Since that time, she has served as an AUSA in the Appellate Division where she authored direct appeals briefs and post-conviction responses, provided trial assistance to the Criminal Division, reviewed and edited briefs, presented at least 19 oral arguments before the Fifth Circuit and conducted trainings. Prior to becoming the chief of the Appellate Division in 2017, she served as its deputy chief.

Prior to joining the USAO, she was a Harris County Assistant District Attorney in the Appellate Division in Houston Texas, for 11 years. While there, she worked on over 480 direct appeals, including eight capital murder death penalty appeals, and presented more than 20 oral arguments, resulting in over 76 published opinions. She was also associate counsel on three respondent’s briefs in opposition in the U.S. Supreme Court while working at the Harris County D.A.’s Office.

Mitchell holds a B.A., cum laude, from Midwestern State University and a J.D., cum laude, from Texas Tech University School of Law.

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Updated April 5, 2022

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