Marshal D. Morgan

Marshal D. Morgan is a seasoned trial attorney with more than three decades of experience spanning complex litigation, federal judicial service, and private practice. As Counsel at McConnell Valdés, he represents clients in a wide range of civil and criminal matters, drawing on extensive courtroom experience and sound judgment developed across both trial and appellate courts.

His practice is informed by his distinguished tenure in federal service, including his role as a United States Magistrate Judge for the District of Puerto Rico. In that capacity, he presided over a broad spectrum of civil and criminal proceedings, including evidentiary hearings, settlement conferences, and jury trials. He also investigated allegations of professional misconduct within the federal bar and recommended appropriate disciplinary measures. His judicial experience provides him with a valuable perspective on litigation strategy, motion practice, and trial advocacy.

Prior to his judicial appointment, Marshal served for more than a decade as an Assistant United States Attorney in the District of Puerto Rico. As Deputy Chief of the Criminal Division’s Crimes Against Children and Human Trafficking Unit, he led a specialized team prosecuting offenses impacting vulnerable populations. Under his leadership, the United States Attorney’s Office expanded enforcement under the Mann Act, including prosecutions involving the transportation of minors within Puerto Rico for criminal sexual purposes. He also played a key role in bringing some of the first prosecutions under the Trafficking Victims Protection Act.

Earlier in his tenure at the U.S. Attorney’s Office, he served in the White-Collar Unit, where he handled complex investigations and prosecutions involving bank, mail, and wire fraud; identity theft; money laundering; Social Security fraud; and interstate stalking. He also served as the office’s point of contact for crimes involving violence against women and as Ethics Officer for the Criminal Division. During his prosecutorial career, he tried approximately eighteen federal jury trials.

Among his notable prosecutions were cases involving attempted family homicide, sex trafficking of minors—including cases involving public officials and clergy—large-scale financial fraud, and violent crimes. These matters resulted in significant convictions and substantial prison sentences, including several precedent-setting prosecutions within Puerto Rico.

Before entering federal service, he co-founded the law firm Levin, Morgan & Longo in Orlando, Florida. There, he represented individuals and corporate clients in a broad range of matters, including real estate litigation, contract disputes, tort defense, construction defects, defamation, family law, and condominium association law. His appellate experience includes successfully opposing a petition for certiorari before the United States Supreme Court and arguing before Florida’s Fifth District Court of Appeal. He also handled federal anti-piracy litigation in the District of Puerto Rico and provided pro bono service as a Guardian ad litem.

Earlier in his career, he practiced at leading law firms in Puerto Rico, where he managed complex commercial litigation in local, federal, and bankruptcy courts. His work encompassed mass tort defense, environmental law, franchise disputes under Laws 75 and 21, medical malpractice, employment discrimination, ERISA, intellectual property, products liability, and alternative dispute resolution. His clients included major corporations such as Enron Corp., The Equitable Life Assurance Society, MONY Life Insurance Company, Walgreen Co., Coors Brewing Company, Lorillard Tobacco Company, Loews Corporation, and Wyndham International.

He has argued multiple cases before the United States Court of Appeals in both civil and criminal matters.

In addition to his legal practice, Marshal has been active in international judicial education through the U.S. Department of Justice’s Office of Overseas Prosecutorial Development, Assistance and Training (OPDAT) and the Judicial Studies Institute (JSI). He has trained judges and prosecutors throughout Latin America on the transition from inquisitorial to accusatory systems, addressing topics such as evidentiary standards, judicial roles, and digital evidence. His training engagements have included programs in Mexico City, Mendoza, Argentina, San Juan, Puerto Rico, and multiple virtual sessions.

He has received special recognition from the Colegio de Abogados de Puerto Rico for his mentorship contributions. He is also a multiple recipient of the Homeland Security Investigations Executive Associate Director’s Award for Outstanding Investigative Accomplishments, including recognition for his work on “Operation Island Express” and the cyber-crime case United States v. Rodríguez-Rodríguez.