In case you haven't been following the latest GOP conspiracy theory—which is that the IRS covered up a plot by former IRS official Lois Lerner to destroy her hard drive in order to hide her secret pro-Obama conspiracy which became public in 2013—this exchange between moronic Louisiana Congressman Charles Boustany and IRS Commissioner John Koskinen tells you pretty much everything you need to know:
BOUSTANY: Why wasn't this committee notified before a decision was made to completely recycle her hard drive?
KOSKINEN: Uh, the committee was not notified because that decision would have been made three years ago. It's not a decision—none of this had anything to do with the investigation.
So, Republicans are outraged by the IRS's failure to pre-brief them in 2013 on a decision that was made in 2011 about how to handle a failed hard drive. In short: Impeach!