The translation of the RSV was a joint work between Catholic and Protestant scholars. Orchard and Fuller, who were heavily involved in producing the
Catholic Commentary on Holy Scripture in 1953 (one of the first scholarly commentaries after Pope Pius XII's
Divinu Afflante Spiritu and based on the Douay-Rheims), also were involved in the translation of the RSV, and used it in the second edition of that same commentary in 1957. (I know, probably more information than you wanted.)
If I recall correctly, the RSV-CE meets the requirements set by Redemptionis Sacramentum to be used in the Lectionary, though I don't think anyone uses it.
The Protestant community by and large rejected the RSV in favor of the NIV translation or the existing KJV.
though I don't think anyone uses it. I thought, based on what Fr. Neuhaus says (and has said in the past) that the USCCB insists on the use of the NAB.
Thanks for the clarification re the RSV.