The Orthodox Roman Catholic Movement (ORCM) is a group of priests founded by Fr. Francis E. Fenton acting on the suggestions of Fr. Joaquin Sáenz y Arriaga, S.J., and was the U.S. organization parallel to the Mexican organization Unión Catolica Trento, founded by Fr. Saenz along with Frs. Moises Carmona and Adolfo Zamora. Fr. Fenton was a founding member of the "conservative" John Birch Society, and was on its American Opinion Speakers Bureau.
Among present or former ORCM members, besides McKenna (in 1986), it seems that Fr. Paul Marceau too had been consecrated a bishop, for he is credited with having performed the consecration of the Church of Our Lady of Fatima at Spring Hills, Florida (That church is presently presided over by independent bishop Terence Fulham, who belongs to the Carlos Duarte Costa succession.)