Deep throat -- not even remotely Jewish

Allison, Backspin and JTA have all noted that Mark Felt, AKA Deepthroat, is not Jewish. The thought that he perhaps was led to an (altogether routine) anti-Semitic little aside by Nixon, when he was speculating over whether Deepthroat could be an FBI agent in 1972:

Nixon: Well, if they've got a leak down at the FBI, why the hell can't Gray tell us what the hell is left? You know what I mean?...
[Chief of Staff] Haldeman: We know what's left, and we know who leaked it.
Nixon: Somebody in the FBI?
Haldeman: Yes, sir. Mark Felt. You can't say anything about this because it will screw up our source and there's a real concern. Mitchell is the only one who knows about this and he feels strongly that we better not do anything because--
Nixon: Do anything? Never.
Haldeman: If we move on him, he'll go out and unload everything. He knows everything that's to be known in the FBI. He has access to absolutely everything ...
Nixon: What would you do with Felt?
Haldeman: Well, I asked Dean ...
Nixon: You know what I'd do with him, the bastard? Well that's all I want to hear about it.
Haldeman: I think he wants to be in the top spot.
Nixon: That's a hell of a way for him to get to the top.
Haldeman: You can figure a lot of--maybe he thought--first of all, he has to figure that if you stay in as president there's a possibility or probability Gray will stay on. If McGovern comes in, then you know Gray's going to be out ...
Nixon: Is he Catholic?
Haldeman: (unintelligible) Jewish.
President Nixon: Christ, put a Jew in there?
Haldeman: Well, that could explain it too.

Unfortunately not. No Jewish cabal in the FBI then....