- The training of Isaac Thomas Hecker (1819-88), which interprets Catholicism as promoting human being aspirations after liberty and truth, so when the religion best suited into the character and establishments regarding the US folks.
- Improperly, specific views or axioms mistakenly ascribed to Father Hecker in a French interpretation of Elliott's Life of Hecker. They certainly were condemned as “Americanism” because of the Pope, in a letter to Cardinal Gibbons, January 22, 1899.
- The theological views attributed to Rev. Isaac T. Hecker, by which he was faced with minimizing Roman Catholic doctrine to accommodate United states notions. See Americanism.