Between 2004 and 2007, he was an associate at Baker Botts, practicing complex commercial and intellectual-property litigation in state and federal courts. His practice covered a wide range of civil matters, including energy, wage-and-hour, patent, information-technology, real estate, and employment litigation. He represented both plaintiffs and defendants.[6]
In 2007, he began work as an assistant United States attorney for the Northern District of Texas, representing the United States at trial and on appeal. He helped prosecute Hosam Smadi, who was convicted of attempting to use a weapon of mass destruction in a downtown Dallas skyscraper.[7] He also briefed and argued the Dallas City Hall corruption case, where the Fifth Circuit affirmed the bribery, extortion, and money-laundering convictions and sentences of multiple defendants.[8] He argued over 25 appeals at the Fifth and Seventh Circuits, including two en banc arguments, and served as sole counsel in over 350 appeals involving, among other things, terrorism, public corruption, organized crime, child exploitation, violent crime, and financial fraud. He also served on various trial teams—trying cases, briefing and arguing dispositive motions, and handling sentencing hearings. He regularly taught courses at the Department of Justice's National Advocacy Center and served as a CLE instructor.[9]
Hendrix became chief of the appellate division in 2012. As chief, he served as the office's lead appellate litigator and as a member of the senior management team. He regularly coordinated with the Department of Justice's Criminal Division Appellate Section and the Office of the Solicitor General regarding cases appealed to and argued before the U.S. Supreme Court.[6] In 2015, he began serving on the Appellate Chiefs Working Group for the United States Attorney General's Advisory Committee.[10] In 2017, he became Chair of the Appellate Chiefs Working Group and a member of the Attorney General's Advisory Committee.[11]
Hendrix teaches courses about federal sentencing law and policy as an adjunct professor at Texas Tech University School of Law.[12] In 2020, Texas Tech University's School of Law Alumni Association selected Hendrix to receive the Outstanding Service Award.[13]
Federal judicial service
Expired nomination to district court under Obama
On March 15, 2016, President Barack Obama nominated Hendrix to serve as a United States district judge of the United States District Court for the Northern District of Texas, to the seat vacated by Judge Jorge Antonio Solis, who retired on May 1, 2016.[14] On September 7, 2016, a hearing before the Senate Judiciary Committee was held on his nomination.[15] His nomination expired on January 3, 2017, with the end of the 114th Congress.
On February 27, 2024, Hendrix found that a rule implemented by House Democrats during the COVID-19 pandemic allowing virtual and proxy votes to count toward a quorum violated the Quorum Clause of the Constitution.[22] This contradicted the opinion of the House Parliamentarian, who had determined that rules allowed members to vote remotely and that their presence counted toward a quorum. In accordance with this ruling, Hendrix imposed an injunction against the implementation of the Pregnant Workers Fairness Act in Texas.[23]
