The ranking Democrat on the committee leading the investigation of the IRS said Sunday that the matter is effectively settled and had some unusually harsh words for committee Chairman Darrell Issa (R-Calif.).

In a letter to Issa, House oversight committee ranking member Elijah Cummings (D-Md.) expressed disappointment with the chairman's handling of the issue, suggesting he had made unsubstantiated allegations and had selectively distributed information that back up his claims, while not releasing other findings.