From Wikipedia page https://en.wikipedia.org/wiki/Malfeasance_in_office
The West Virginia Supreme Court of Appeals summarized a number of the definitions of malfeasance in office applied by various appellate courts in the United States.
“Malfeasance has been defined by appellate courts in other jurisdictions as a wrongful act which the actor has no legal right to do; as any wrongful conduct which affects, interrupts or interferes with the performance of official duty; as an act for which there is no authority or warrant of law; as an act which a person ought not to do; as an act which is wholly wrongful and unlawful; as that which an officer has no authority to do and is positively wrong or unlawful; and as the unjust performance of some act which the party performing it has no right, or has contracted not, to do.”
— Daugherty v. Ellis, 142 W. Va. 340, 357-8, 97 S.E.2d 33, 42-3 (W. Va. 1956) (internal citations omitted).
In other news, very much related, the “Executive Order: Border Security and Immigration Enforcement Improvements” was signed. Meanwhile, national or interal infrastructure could very much use buttressing.