Birch·er 
(bûrchər) also Birch·ist (-chĭst) or Birch·ite (-chīt′)
(bûrchər) also Birch·ist (-chĭst) or Birch·ite (-chīt′)n.
A member or supporter of the John Birch Society, an anti-Communist organization founded in 1958.
[After John Birch (1918-1945), Indian-born American missionary and intelligence officer.]
Birchism n.
Birchist, Birchite adj.