Ah, but was he an anti-Semite before he joined the Society?
Most good conservatives today don't know anything about how pervasive this anti-Semitism used to be on the Right. They've never heard of Willis Carto or Liberty Lobby or Spotlight or Conde McGinley or Joseph Kamp or Eustace Mullins or Prince Michel Sturdza or Nesta Webster or any number of other such sundry personalities. And it's probably better that they don't.
Unfortunately good and well-meaning conservatives simply don't understand the red flags that go up in Jews' minds when they hear certain terms (conspiracy, "international bankers," "the money power," etc.).
I've said as much in past articles pertaining to Jews who hold on to liberalism despite is own anti-Semitic elements. Many older Jews identify the Republican Party as the party that discriminated against them and made them feel unwelcome. Most modern conservatives don't know that old time conservatism was not very friendly to Jews or other minorities. That was when rich, elite Pubbies really did control the party. I think since it's become more democratized i.e. more controlled by small town and even (gasp) religious conservatives, it's a lot more friendlier to Jews. There's no doubt conservatives are a lot more pro-Israel than liberals, Pat Buchanan not withstanding (and good riddance to Pat.)
I remember this guy bringing that rag to work. I perused it one time, and the whole thing was basically a rant against Jews, Israel, and (ahem) the Zionist Conspiracy. I dismissed Carto as a nut, and since I was a Dem at the time, wondered how many conservatives thought like he did. It's not to difficult to understand how many average non-political types would associate conservatism with anti-Semitism.