Federal Prosecutors Won't Appeal Ruling Barring Death Penalty in Luigi Mangione Case

Judge's decision clears way for trial starting in September, state murder trial set for June

Published on Feb. 28, 2026

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Federal prosecutors have announced they will not appeal a judge's ruling that bars them from seeking the death penalty against Luigi Mangione in the killing of UnitedHealthcare CEO Brian Thompson. The judge dismissed a federal murder charge that had enabled prosecutors to seek capital punishment, finding it legally flawed. Mangione, 27, has pleaded not guilty in the federal and state cases, which both carry the possibility of life in prison.

Why it matters

This case has drawn national attention, with the Trump administration previously seeking to execute Mangione for what it called a 'premeditated, cold-blooded assassination.' The judge's ruling disrupts those plans and raises questions about the application of the death penalty and the strength of the government's case.

The details

In a letter, Deputy U.S. Attorney Sean Buckley told Judge Margaret Garnett that the government will not ask the 2nd U.S. Circuit Court of Appeals to reverse her decision. Garnett last month dismissed a federal murder charge, finding it legally flawed, and also threw out a gun charge but left in place stalking charges that carry a maximum punishment of life in prison. Mangione, a University of Pennsylvania graduate from a wealthy Maryland family, was arrested five days after the December 2024 killing in Manhattan.

  • On December 4, 2024, UnitedHealthcare CEO Brian Thompson was killed as he walked to a midtown Manhattan hotel.
  • On December 9, 2024, Mangione was arrested at a McDonald's in Altoona, Pennsylvania, about 230 miles west of Manhattan.
  • In June 2026, Mangione's state murder trial is scheduled to begin.
  • In September 2026, jury selection in Mangione's federal case is scheduled to begin, followed by opening statements and testimony on October 13.

The players

Luigi Mangione

A 27-year-old University of Pennsylvania graduate from a wealthy Maryland family who has pleaded not guilty in the federal and state cases.

Brian Thompson

The 50-year-old CEO of UnitedHealthcare who was killed in December 2024 as he walked to a midtown Manhattan hotel for UnitedHealth Group's annual investor conference.

Judge Margaret Garnett

A former Manhattan federal prosecutor appointed to the bench by President Joe Biden who dismissed the federal murder charge against Mangione, finding it legally flawed.

Sean Buckley

The Deputy U.S. Attorney who told Judge Garnett that the government will not appeal her ruling barring the death penalty.

Pam Bondi

The U.S. Attorney General during the Trump administration who called Thompson's killing a 'premeditated, cold-blooded assassination that shocked America.'

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What they’re saying

“It's the same trial twice. One plus one is two. Double jeopardy by any commonsense definition.”

— Luigi Mangione (Court hearing)

“The law must be the Court's only concern.”

— Judge Margaret Garnett (Ruling)

What’s next

The judge in the state case, Gregory Carro, said the trial could have been pushed back until September 8 if federal prosecutors had appealed the death penalty ruling.

The takeaway

This case highlights the complex legal issues surrounding the death penalty and the challenges prosecutors face in securing capital punishment, even in high-profile cases. The judge's ruling reflects a commitment to upholding the law, even if the decision may seem 'tortured and strange' to some.