In their wisdom, however, most Latin Ordinaries whose canonical jurisdictions encompass faithful and temples of this Church have invited Eastern Catholic hierarchs to provide episcopal services to or otherwise particpate in the spiritual oversight of the Church's parishes and missions. As a consequence, the Eparch of Newton of the Melkites formally exercises a spiritual omophor with regard one such parish and affords hierarchical services informally to another. The Eparch of St George in Canton of the Romanians does similarly with yet another of the communities. A Melkite presbyter serves the fourth such parish, albeit there is no formal or informal agreement in place as to involvement by the Melkite hierarchy in this instance.
Included in these listings is a historical entry for the sole former US mission of the Russian Catholic Old Ritualists, a constituent body within the Russian Greek-Catholic Church. Regretably, the Old Ritualist Catholics no longer have a presence within the United States.