Actually there are four parishes in the US; San Francisco (Our Lady of Fatima), Los Angeles (St. Andrew’s in El Segundo), Denver, and New York (St. Michael’s). There is also a parish in Australia. Since the Russian Catholics have no exarch, their episcopal care falls on the local Latin hierarch. The Latin hierarch often allows another Eastern Catholic hierarch to assist in the pastoral care of the Russian Catholic parish. In three of the U.S. parishes and the Australian parish, the Melkites are involved; the remaining U.S. parish has a relationship with the Romanian eparchy.
The Russian Catholic Church last has a Sobor in 1917 presided over by Blessed Exarch Leonid Feodorov and Metropolitan Andrey Sheptytsky. Currently there are two vacant Exarchates, one of Harbin for the diaspora and one of St. Petersburg-Moscow for within Russia. The pastoral care for the Russian Catholics within the former USSR has largely fallen to the UGCC, while as I mentioned in the diaspora the Melkites have largely helped in this regard.
In most cases the Russian Catholic parishes using English make use of the OCA books. I served as deacon once and used the small St. Tikhon’s Liturgy book.