IRS SCANDAL UPDATE: The IRS’s Best Friend in Congress: Rep. Elijah Cummings says the House investigation is a ‘witch hunt.’ Yet revealing evidence keeps coming.

Mr. Cummings’s enthusiasm for defending the IRS may make him a lonely figure among the 22 Republicans and 16 Democrats on the House Oversight Committee, but he is likely to find an ally in his chief counsel on the committee. She is Susanne Sachsman Grooms, who worked for the IRS between 2008 and 2011 as an adviser to the deputy commissioner for services and enforcement and then as a senior counselor to the chief of criminal investigations. At the time, the deputy commissioner for services and enforcement—her boss—was none other than Steven Miller, who held the post of IRS commissioner from November 2012 until his resignation in May after the scandal broke. Mr. Cummings also has a strong tie to the Obama administration: His staff director on the Oversight Committee, David Rapallo, is a former White House lawyer.

The door keeps revolving. Plus:

Many questions remain for the committee to address, even if Mr. Cummings might disagree. Who at the IRS, for instance, developed the intrusive and exhaustive questions that were sent to the tea-party groups? Why did so many of those groups have to wait years for their applications to be processed, and why are many more still waiting? Who specifically were the IRS officials in Washington directing the Cincinnati agents targeting the tea-party organizations?

If the House Oversight Committee can overlook the distractions thrown up by one of its members, the answers may prove illuminating about the way Washington has worked during the Obama administration.

Indeed.