Luigi Mangione’s lawyers contend that Attorney General Pam Bondi’s decision to seek the death penalty against him in the killing of UnitedHealthcare CEO Brian Thompson was tainted by her prior work as a lobbyist at a firm that represented the insurer’s parent company. His lawyers argue in a court filing that Bondi was a partner at Ballard Partners before leading the Justice Department’s charge to turn Mangione’s federal prosecution into a capital case, creating a “profound conflict of interest” that violated his due process rights. They want prosecutors barred from seeking the death penalty and some charges thrown out. Messages seeking comment were left for the Justice Department and Ballard Partners.