Sailpoint_User I had to install the cert on my User personal store in order to debug in PowerShell. For the deploy, my PowerShell is being invoked as part of an SSIS package via a SQL job. The package is being invoked by the job using a Proxy user. So, I had to install the cert on that user's personal store. That got me past that issue. Then, the security issue hit. It is insane to me that I have to grant the application admin rights just so that my PowerShell script can invoke Search-UnifiedAuditLog.
The final issue I have, which I have yet to post, is that something in the Exchange module fails with a file not found whenever the SQL job runs and the Proxy server is not currently logged in to the server. I tried running with the -noprofile switch, but that does not work either.