With all due respect, I'm skeptical about that.
I have first hand knowledge that was not the case when he was Governor. And I also know that he would not be pleased to know he has correspondence that is not being answered. Of that I'm sure.
It may not be the answer you or your acquaintances would like. But if you're not getting any answer, I'd put money on the fact that the Senator is not aware that mail in his office is being ignored.
Allen ping.