Luigi Mangione is due in court Tuesday as his lawyers push to have his state murder charges thrown out in the killing of UnitedHealthcare CEO Brian Thompson. They argue that the New York case and a parallel federal death penalty prosecution amount to double jeopardy. Also to be decided: a trial date and whether the state case or federal case will go first. Dozens of supporters showed for the hearing, many wearing the Luigi video game character’s green color as a symbol of solidarity. It's Mangione’s first court appearance in the state case since February. The 27-year-old Ivy League graduate has attracted a cult following as a stand-in for frustrations with the health insurance industry.