Rubio says he can understand Darrell Issa's frustration after Lois Lerner refused to testify.
"I think the argument that Chairman Issa is making is that she waived that right when she testified and gave a statement. Then she decided not to answer any more questions."
In his own words, Rubio feels the IRS is "dragging their feet" on these investigations. He says its unacceptable to think it could take a very long time to get the truth.
"It's unacceptable. They either did it or didn't. If they would be cooperative then we would have the answer to that."