Luigi Mangione, the accused in the killing of United Healthcare CEO Brian Thompson, recently claimed that President Donald Trump was violating his right to a fair trial. According to TMZ's report dated September 24, 2025, Mangione's legal team has accused Trump of constantly referring to him publicly, following the assassination of political activist Charlie Kirk. As per the legal documents obtained by TMZ, Luigi Mangione's legal team has mentioned that comments made by Trump and some members of his administration undermine Mangione "by baselessly linking him to unrelated violent events, and left-wing extremist groups, despite there being no connection or affiliation."The accused in Brian Thompson's murder added how Charlie Kirk's assassination has "only increased this prejudicial rhetoric." Mangione's claims against Trump and his administration are based on the president's comments on Fox News on September 18, 2025. At the time, Trump said:"The thing about Mangione, he shot someone in the back as clear as you're looking at me or I'm looking at you… he looked like a pure assassin. There's not a question - he openly walked up to a man and shot him right in the middle of the back. This is a sickness. This really has to be studied and investigated."Additionally, a social media account affiliated with the White House posted Donald Trump's Fox News interview, and Chad Gilmartin, the deputy director of the Department of Justice Office of Public Affairs, reposted it, stating the POTUS was "absolutely right."Luigi Mangione's lawyers also mentioned comments made by Karoline Leavitt, the White House Press Secretary, on September 22, 2025. In her statement, Leavitt addressed Magione as a "left wing assassin [who] shot United Healthcare CEO Brian Thompson right in the back in New York City."More details about Luigi Mangione's claim against Donald Trump prejudicing his trial exploredIn addition to mentioning Donald Trump's comment and Chad Gilmartin's emphasis on the same, Luigi Mangione's legal team mentioned White House Deputy Chief of Staff Stephen Miller in their recent letter as well. According to the letter, in his interview with Fox News on September 23, 2025, Stephen Miller referred to Mangione and said:"Of course the health care CEO was brutally gunned down by another self-described so-called anti-fascist that was then celebrated by other self-described anti-fascists, so of course, really communist revolutionaries."Moreover, Mangione's legal team mentioned that attempts by Leavitt, Gilmartin, and Donald Trump to connect their client with the recent incident concerning Charlie Kirk's assassination portray him as a "'left wing' violent extremist". Luigi Mangione's lawyers dubbed Trump and his associates' comments as "false, prejudicial, and part of a greater political narrative that has no place in any criminal case, especially one where the death penalty is at stake."Luigi Mangione and his legal team's letter resulted in a federal judge in New York warning officials in the Department of Justice against comments on the Brian Thompson murder accused. The judge said that continued public comments on Mangione's case would result in relief for the accused, such as losing the death penalty or sanctions against the prosecution. In other news, District Judge Margaret Garnett criticized officials in her order, questioning how two senior DOJ officials endorsed Trump's speculation of Mangione's guilt before his trial began. While the posts in question are now deleted, the judge mentioned that putting forth opinions concerning an ongoing case could result in hindrance of a fair trial.