Irma Carrillo Ramirez

Irma Carrillo Ramírez (born 1964) is a United States circuit judge on the Fifth Circuit Court of Appeals. She entered federal appellate service in December 2023 after being confirmed to the seat vacated by Judge Gregg Costa. Prior to her elevation, Ramirez served for more than two decades as a United States magistrate judge in the Northern District of Texas and held positions as an associate at a Dallas law firm and as an assistant United States attorney. Her career reflects extensive experience in both civil and criminal federal practice, and she is noted as the first Latina appointed to the Fifth Circuit.

Early life and legal career

Ramirez was born in 1964 to parents who arrived in the United States as part of the bracero guest‑worker program. She pursued undergraduate studies at West Texas A&M University, receiving a Bachelor of Arts degree in 1986. Continuing her education in law, she earned a Juris Doctor from Southern Methodist University’s Dedman School of Law in 1991.

Following admission to the bar, Ramirez began her professional practice as an associate with the Dallas firm Locke Purnell Rain Harrell, which later became part of Locke Lord LLP. She remained with the firm from 1991 until 1995, gaining experience in private‑practice litigation. In 1995 she entered public service as an assistant United States attorney for the Northern District of Texas. During her tenure in the U.S. Attorney’s Office, Ramirez worked first in the Civil Division (1995–1999) and subsequently in the Criminal Division (1999–2002), handling a range of federal matters.

In September 2002 Ramirez was appointed a United States magistrate judge for the Northern District of Texas. She served in that capacity until December 2023, overseeing pre‑trial proceedings, evidentiary hearings, and civil disputes. Among the cases over which she presided were several that attracted public attention. In 2017 she imposed a monetary sanction on former football player Deion Sanders for missing a deposition in a whistleblower lawsuit concerning alleged fraud involving a charter school’s participation in the federal school‑lunch program. Two years later, Ramirez dismissed a wrongful‑death suit filed by the family of Botham Jean against the city of Dallas; her ruling concluded that the plaintiffs had not demonstrated a pattern of police misconduct sufficient to implicate municipal liability. In 2021 she presided over a tax‑fraud case involving Dallas attorney Joseph Garza, who was accused of concealing approximately one billion dollars in income and facilitating fraudulent tax shelters that reduced client liabilities by hundreds of millions of dollars.

Ramirez’s judicial career also intersected with the federal nomination process. On March 15 2016 President Barack Obama nominated her to serve as a United States district judge for the Northern District of Texas, filling the vacancy created when Judge Terry R. Means assumed senior status. A Senate Judiciary Committee hearing was held on September 7 2016, but the nomination did not advance before the end of the 114th Congress and consequently expired on January 3 2017.

Federal appellate service

President Joe Biden announced his intent to nominate Ramirez to the Fifth Circuit Court of Appeals on April 14 2023. The formal nomination was transmitted to the Senate three days later, designating her as the successor to Judge Gregg Costa, who had resigned in August 2022. Both Texas senators, John Cornyn and Ted Cruz, publicly supported Ramirez’s appointment.

The Senate Judiciary Committee conducted a hearing on Ramirez’s nomination on May 17 2023. The committee reported the nomination favorably by voice vote on June 8 2023; Senator Josh Hawley recorded a “no” vote in the record. Subsequent floor action included an invocation of cloture on November 30 2023, which passed with an 80–17 vote. The final confirmation vote took place on December 4 2023 and resulted in an 80–12 affirmation of her appointment. Ramirez received her judicial commission on December 8 2023 and entered active service as a circuit judge.

Her elevation to the Fifth Circuit marked a historic milestone: she became the first Latina to serve on that appellate court. The Fifth Circuit, which covers Texas, Louisiana, and Mississippi, is one of the nation’s most influential federal appellate courts, handling a substantial docket of civil rights, criminal, and commercial cases. Ramirez’s background in both civil and criminal federal practice, as well as her extensive experience as a magistrate judge, positioned her to contribute substantively to the court’s jurisprudence.

Jurisprudence and legacy

Since joining the Fifth Circuit, Judge Ramirez has participated in several decisions that illustrate her role on the appellate bench. In August 2025 she authored an opinion, joined by Senior Judge James L. Dennis, holding that congressional redistricting maps adopted by Louisiana violated Section 2 of the Voting Rights Act because they “packed” and “cracked” Black communities, thereby diluting their electoral influence. The ruling emphasized the court’s continued oversight of state‑level districting practices under federal voting‑rights statutes.

Later that same year, in September 2025, Ramirez joined a two‑to‑one majority that rejected an attempt by former President Donald J. Trump to invoke the Alien Enemies Act as a basis for deporting Venezuelan nationals. The opinion clarified the scope of the act and affirmed limitations on its application to contemporary immigration matters.

These appellate opinions reflect Ramirez’s engagement with significant constitutional and statutory issues, ranging from voting‑rights protections to executive authority in immigration enforcement. Her participation in panels addressing such matters contributes to the development of federal law within the Fifth Circuit’s jurisdiction.

Beyond specific rulings, Ramirez’s career embodies broader trends in the diversification of the federal judiciary. As the first Latina on the Fifth Circuit, her presence expands representation among appellate judges and may influence perceptions of inclusivity within the legal profession. Her prior service as a magistrate judge for over twenty years also underscores the pathway from trial‑level adjudication to appellate responsibilities, illustrating how extensive judicial experience at the district level can inform appellate decision‑making.

In sum, Irma Carrillo Ramírez’s trajectory—from her upbringing as the daughter of Mexican immigrants through private practice, federal prosecution, a long magistrate judgeship, and ultimately appointment to the Fifth Circuit—highlights a career marked by sustained public service. Her contributions on both the district and appellate courts have addressed a range of legal issues, and her historic appointment adds a notable chapter to the evolving composition of the United States judiciary.