Meanwhile, in the IRS mess,

The IRS scandal was connected this week not just to the Washington office—that had been established—but to the office of the chief counsel.
...
Still, what landed was a bombshell. And Democrats know it. Which is why they are so desperate to make the investigation go away. They know, as Republicans do, that the chief counsel of the IRS is one of only two Obama political appointees in the entire agency.
Which explains why Cummings so badly wants to say 'the investigation is over'.