Maybe the true beneficiary here was the Republican Party who lost Senate and Congressional seats to Tea Party conservatives.
It looks to me when the smoke clears the real beneficiary was Karl Rove and the Republican Party who sees the Tea Party and the far right as a threat to them and their business cronies.
The IRS has no business giving any of these groups tax exempt status or hiding donors looking to manipulate politics. The investigation should include why the IRS gave any of these groups this status and if some groups were given special status for political reasons why and on who's orders. What's really clear which you want to ignore the big donors on both sides got a free ride.
The Democrats would have gained more by letting this fringe groups in and keeping the big donors out. At the end of the day this benefited both traditional parties and the head of the IRS was a Bush appointment. It looks to me status was given based on money and power not party and at the end of the day that's the scandal that nobody is going to care about.
Should the same Republican and Democratic senators that took money from these groups who got status investigate this? Seems to me a big conflict of interest. We need a special prosecutor with subpoena power. A Congressional investigation by people who took money from these groups simply can't be trusted.
The rules were broken when these groups were given status by the IRS they shouldn't have gotten in the first place. Frankly those who are complaining about some small time groups that were kept out are being tooled.