Historically, a fiduciary breach of the duties of office, including:
"Acting outside authority...and issuing unlawful and irregular orders" (Comyns, 1780)
See Robert Natelson (building on a 1975 article by Rogers and Young) 1/
fedsoc.org/commentary/pub…
'it [was] indispensable that some provision should be made for defending the Community agst [sic] the incapacity, negligence or perfidy of the chief Magistrate...