The IRS had to talk to someone at Sonasoft to end their relationship, so I would subpoena that person to testify to ISSA committe as to ‘why’ the IRS cancelled their services, and what request did they make about the e mails? The crime of withholding evidence will be exposed... if enough pressure is put on those involved and ...who and when they asked for in favors.
Congress should be VERY public about discussions with Sonasoft, and a subpoena is in order.. Sonasoft COULD end up embarrassing itself and harming it’s reputation if it doesn’t cough up Lerner’s Emails WHICH THEY 100% SURELY MUST STILL HAVE.