Derek Chauvin's legal team has filed a new petition to dismiss his charges and vacate his convictions. The core argument is that the state never lawfully brought the case because a grand jury did not review the evidence. Attorney Greg Joseph alleges that Governor Tim Walz, Attorney General Keith Ellison, and the Hennepin County Attorney's Office engaged in unlawful and fraudulent conduct. The petition contends that Judge Peter Cahill presided over a due process violation by not convening a grand jury. This procedural failure, according to the filing, meant the court lacked jurisdiction over the charges. The petition also claims Walz's decision to assign the prosecution to Ellison was an unlawful appointment. It further states Ellison used unauthorized authority to add a second-degree murder charge. The filing suggests political pressure influenced the charging decisions, leading to escalation beyond what the local prosecutor supported. Chauvin is currently serving sentences for state murder and federal civil rights convictions. Joseph asserts the entire trial was a fraud based on unfounded charges and therefore unreviewable.