Luigi Mangione’s lawyers say back-to-back state and federal trials violate his constitutional rights

Luigi Mangione’s lawyers asked a judge on Wednesday to postpone his federal trial in the killing of UnitedHealthcare CEO Brian Thompson until early next year and said they will seek to have his state murder trial delayed until September.

In a letter to U.S. District Judge Margaret Garnett, Mangione’s lawyers said that the current schedule — the state trial in June and the federal trial in September — would put him “in the position of needing to prepare for two complicated and serious...