At least two House committees (Ways and Means, and Oversight and Government Reform) and two Senate panels (Finance Committee and the Permanent Subcommittee on Investigations) have said they will investigate the revelations and hold hearings.
Also, the Treasury inspector general for tax administration is releasing a report on the practice.
Among the questions remaining is to what extent then-IRS Commissioner Douglas Shulman was aware of the situation when he testified before Congress, in March 2012, that conservative groups were not being targeted. Investigators will also seek to determine who at the IRS knew about the targeting and when.
Whatever revelations are to come, the IRS scandal is likely to stay in the headlines for some time to come.
