"Some of the statements that have been made here today make it look like you’re just coming up here trying to fool people when under Republican and Democrat administrations you have been highly regarded," Cummings continued.
The Ranking Member then criticized Republicans for badgering Koskinen even though the IRS watchdog found that there was no White House involvement in the auditing of 501(c)(4) groups.
"But we just push the facts over there," he lamented about the way Koskinen was treated, "and let’s see what we can do to him."
"I appreciate you coming into this institution, giving it the best you’ve got, and then having to come in here and go through this hell!" Cummings concluded.
Cummings and another Democratic congressman, Rep. Steven Horsford of Nevada, also reportedly got into a tiff with committee Chairman Darrell Issa (R-CA).
Watch a clip of Cummings via C-Span: