While I continue to believe that “America First” as our president seems to mean it is inconsistent with Christian belief and witness, it's also worth noting that the pre-World War II isolationist movement that pioneered that phrase actually had considerable support from a wide range of Christians.
Glen Jeansonne prefer the broader term “mothers' movement” to describe the aforementioned women's group, partly to avoid confusion with the AFC. Jeansonne also wrote a biography of Gerald Smith.
There were actually two such groups. The first, more explicitly Christian America First (founded 1939) was a right-wing women's movement affiliated with Gerald L. K. Smith, a firebrand preacher who entered politics via his association with Huey Long and published the conservative magazine, The Cross and the Flag. In a 1994 article for the journal Diplomatic History, Laura McEnaney argued that the self-styled “Christian mothers” of that America First fused religion, patriotism, and isolationism into “a defense of the nuclear family structure and the conventional gender roles that made this movement's vision of social and sexual purity possible and sustainable.”
