I was wrong.
It took a while for me to notice it, but the Society had a very pronounced anti-Israel prejudice. They distributed anti-Semitic material by Nesta Webster and even published bowdlerized versions of books by pro-Nazi Romanian Prince Michel Sturdza, and while they were big fans of Rhodesia, South Africa, Protugal, Spain, and Nationalist China, they were very stand-offish about Israel, even though they never labeled Israel or Ben Gurion as Communist.
The Birch Society is actually largely a front for anti-Semitic sedevacantist and Feeneyite Catholics and anti-Israel "Reconstructionist" Protestants (although it was founded by an evolutionist Unitarian and included among its founding members the notorious atheist anti-Semite Revilo P. Oliver).
The Birch Society was and is totally alien to traditional American (pro-Israel) Fundamentalist Protestantism and is tied in with the anti-Semitic "right" in foreign countries. On the side they pushed an anti-Israel book called The Rapture Cult, which actually speculates that pretribulation dispensationalism was a creation of the "conspiracy." I was even given a copy of this book by my own coordinator!
I know precious few people will take my word for any of this, but I can only say that I have been there and done that, and I know what I know.
The Birch Society is not a righteous organization. To take conservative positions domestically while opposing the Return to Zion shows that their "gxd" is not the True G-d. And there simply is no national American "gxd." The Jewish G-d is the only G-d there is--whether anyone likes it or not.
Actually, Robert Welch believed that “a zionist conspiracy” pre-dated and became the father of the “Communist conspiracy”.