In my opinion, a mass seizure – as is alleged here against Mueller – cannot conform to either Fourth Amendment standards or attorney-client privilege protections. The questions boils down to this: was there a reason for the individuals communicating by email, including with their lawyers, to believe their communications were private or privileged? Or, did the individuals forever waive or “implicitly consent” to any future search or seizure of their emails?



Courts typically employ a four-factor test, that tends to be very fact-intensive, email-specific, and individual-specific. (In re Reserve Fund Securities and Derivative Litigation, 275 F.R.D. 154 (S.D.N.Y. 2011). First, whether the government or company maintains a policy banning personal use. Second, whether the government or employer monitors the use of the email. Third, whether third parties have a right of access to the emails beyond technical audits and maintenance. Fourth, whether the government or employer notifies the individual of the limits on privacy in the emails, whether the individual was aware of those policies, the use of those policies, and the monitoring of those policies. It boils down to whether a person in the individual’s shoes would have had no reasonable expectation of privacy in their email communications.



The Mueller search runs afoul of many of these established court precedents and Fourth Amendment privacy and privilege principles. First, it appears Mueller searched and seized every email, without any kind of categorical or keyword search. This is exactly the kind of search the Supreme Court made clear was not allowed under the Fourth Amendment. This means Mueller can only prevail if he didn’t seize a single email of a single individual that the individual could have any expectation of either personal privacy or attorney client privilege in.

It appears to me, Mueller deliberately skipped the court, the grand jury, and the government-imposed limits on investigative inquiries into worker conduct under Supreme Court precedent; he might have done so because he wanted a tactical edge, and was walling to ignore the Fourth Amendment restrictions on him to do so. Mueller may come to regret his choice.