DANA BASH, CNN: One thing he is not concerned about, what people think of him.
SEN. HARRY REID: I don't really care. I don't want to be somebody I'm not.
BASH (on camera): You're a polarizing figure and a lot of Republicans actually blame you personally for the way Congress and Washington in general has gotten so highly partisan in the last couple of years.
REID: That's interesting. I served as a whip for a long time. And the Republicans were enthused in their praise for me.
BASH (voice-over): That was before he used the Senate floor to go after GOP mega donors, the Koch brothers, and accused Mitt Romney of not paying his taxes with no evidence.
REID: Let him prove that he has paid taxes, because he hasn't.
REID: No, I don't regret it at all. The Koch brothers, no one would help me. They were afraid the Koch brothers would go after them. So I did it on my own.
BASH (on camera): So no regrets about Mitt Romney, about the Koch brothers? Because some people have even called it McCarthy-ite.
REID: Well, they can call it whatever they want. Romney didn't win, did he?