Ehrlichman v. United States

noting the importance, in De Luna, of the presence of mutually exclusive and irreconcilable-defenses | presumptive executive privilege mentioned although it is unclear whether it had been formally asserted | presumptive executive privilege mentioned although it is unclear whether it had been formally asserted | burglary of psychiatrist's files regarding Daniel Ellsberg, who released the "Pentagon Papers" | burglary of psychiatrist's files regarding Daniel Ells-berg, who released the “Pentagon Papers” | whether government used reasonable efforts to produce an informant