Ruben Oseguera Gonzalez, known as “El Menchito” and son of Nemesio Oseguera Cervantes, leader and founder of the Jalisco New Generation Cartel, filed an appeal in federal court from the United States to try to overturn the life sentence imposed on him in March 2025. The appeal was filed with the Federal Court of the District of Columbia and requests the annulment of the verdict or, failing that, a new trial. The defense maintains that the judicial process was tainted by irregularities that prevented a fair trial, including the admission of questionable testimony and an atmosphere of prejudice fueled by media coverage of his relationship to one of Mexico's most wanted drug traffickers. The document argues that the defendant's notoriety eroded the presumption of innocence from the beginning of the case. Oseguera Gonzalez's lawyers assert that the court allowed the trial to unfold under a sensationalist narrative that influenced both the jury and the evidentiary decisions. The appeal, reviewed by the newspaper Milenio, states that “ensuring a truly fair trial was always difficult” due to his family's criminal notoriety and the public attention surrounding the proceedings. The appeal again calls into question the credibility of several cooperating witnesses, including former members of rival criminal organizations and a former police official who served as “El Mencho's” head of security. According to the defense, the accounts presented included episodes lacking documentary support, such as mass celebrations and alleged executions, which should not have been admitted as evidence. One of these testimonies was described as “fanciful” and lacking verifiable evidence. The appeal, according to the aforementioned media outlet, also details that another central point of the appeal is the criticism of the testimony of a DEA special agent, who interpreted messages intercepted on electronic devices and directly attributed them to Oseguera Gonzalez.The defense argues that the district judge erred in allowing a broad and subjective interpretation of those communications, which unduly influenced the verdict. The appeal brief also argues that pressure from U.S. authorities to capture the CJNG leader resulted in a particularly harsh approach against his son. The document maintains that, faced with the impossibility of arresting “El Mencho,” the government opted to prosecute Oseguera Gonzalez with the utmost severity as an alternative to strike a blow against the criminal organization. The trial against “El Menchito” was held in September 2024 and concluded with a conviction for conspiracy to traffic cocaine and methamphetamines, as well as for the illegal use of firearms for criminal purposes. The sentence, handed down in March 2025, included life imprisonment and an additional 30 years in prison. During the proceedings, authorities allegedly offered the defendant a cooperation agreement in exchange for judicial benefits. Oseguera Gonzalez rejected the proposal, considering that it would implicate his mother, Rosalinda Gonzalez Valencia. Following the sentencing, the inmate was initially held at the USP Florence High Federal Prison in Colorado, under a less restrictive regime. However, he was later transferred to ADX Florence Federal Correctional Center, considered the strictest maximum-security prison in the United States. The defense challenged this transfer, considering it an additional punishment not stipulated by the court, and emphasized that there was no history of violence or escape attempts during his previous incarceration.The inmate was initially held at the USP Florence High Federal Prison in Colorado, under a less restrictive regime. However, he was later transferred to ADX Florence Federal Correctional Center, considered the strictest maximum-security prison in the United States. The defense challenged this transfer, considering it an additional punishment not stipulated by the court, and emphasized that there was no history of violence or escape attempts during his previous incarceration.The inmate was initially held at the USP Florence High Federal Prison in Colorado, under a less restrictive regime. However, he was later transferred to ADX Florence Federal Correctional Center, considered the strictest maximum-security prison in the United States. The defense challenged this transfer, considering it an additional punishment not stipulated by the court, and emphasized that there was no history of violence or escape attempts during his previous incarceration.