That move is not needed, said Sen. Robert Menendez, D-N.J.
"I don't see the point," he said of a special counsel to investigate the scandal.
Rep. Tom Price, R-Ga., said the IRS had stepped so far over its mandate that it asked book groups for reading lists and church groups about their prayers before granting them tax-exempt standing. It's government over-reach, he said, and a reason why Republicans need to have their own investigation into the agency.
"This is about trust," Price said.
But he stopped short of calling for a special counsel.
Rep. Charlie Rangel, D-N.Y., said Republicans were using the incidents to embarrass the president.
"There is no Republican agenda other than to stop the president of the United States," he said.
Pfeiffer was appearing Sunday on ABC's "This Week," NBC's "Meet the Press," CBS' "Face the Nation," CNN's "State of the Union" and "Fox News Sunday." Portman, Menendez, Price and Rangel were on ABC.