I don't doubt that FR members have been audited. I'm one of them.
The problem is proving that someone was chosen specifically because they are a member of FR, or even that it wasn't the reason.
With a sufficiently large sample of US residents, you are almost certain to find someone that has been audited in the past two decades.
As you posted earlier, people HAVE been targeted for contributing to conservative organizations. It's far more likely there is some overlap with FR members, and that was the real reason.
True, but this was several years/several years in a row. I obviously don’t know all the details. Just remember 3D talking about it previously. I think there were several at the same Freep that were “targeted” afterwards. Perhaps she will comment more. If there were, coupled with multiple year audits, I think that adds a little more credence to people being specifically targeted, not for simply posting to FR but for actively protesting.