It's all too easy to dismiss someone completely based on their politics, but this(and government overreach in general) is one of the issues that the left and right should be able to come together on.
Remember, Issa was one of the leading voices in Congress against SOPA.
You can't deny the Tea Partiers know how to work a bandwagon, though. Plus Issa is far, far older than the Tea Party and he'll be in office after they're measuring the dustbin for the new curtains.
Issa is corrupt as hell. I mean, he has a business empire that he runs from a different part of the floor on which he has his CA office. Even by the shady standards of Congress, this is pushing it. But he was on the right side of SOPA/PIPA, and he was there before it was the safe, obvious place to be. He's got brass and he's very aggressive. If I were Ortiz, I'd take him seriously.
The latter. Consider embezzlement, for instance. That's a case in which a person abuses their position for personal gain without expecting payment from another. Abuse that festers in the wake of successful attempts to frustrate legitimate competition or oversight is also properly regarded as corrupt, since the system intended to prevent it has been (that's right) corrupted.
Remember, Issa was one of the leading voices in Congress against SOPA.