“ The RC historically has claimed the right to do this.”
False.
---->False.
No, it's true.
“Sunday is our mark or authority...the church is above the Bible, and this transference of Sabbath observance is proof of that fact.” — Catholic Record of London, Ontario, September 1, 1923.
“Of course the Catholic Church claims that the change (Saturday Sabbath to Sunday) was her act...And the act is a mark of her ecclesiastical authority in religious things.” — H.F. Thomas, Chancellor of Cardinal Gibbons.
“The (Roman Catholic) Church changed the observance of the Sabbath to Sunday by right of the divine, infallible authority given to her by her founder, Jesus Christ. The Protestant claiming the Bible to be the only guide of faith, has no warrant for observing Sunday.” — The Catholic Universe Bulletin, August 14, 1942, p. 4.
“The arguments...are firmly grounded on the word of God, and having been closely studied with the Bible in hand, leave no escape for the conscientious Protestant except the abandonment of Sunday worship and the return to Saturday, commanded by their teacher, the Bible, or, unwilling to abandon the tradition of the Catholic Church, which enjoins the keeping of Sunday, and which they have accepted in direct opposition to their teacher, the Bible, consistently accept her (the Catholic Church) in all her teachings. Reason and common sense demand the acceptance of one or the other of these alternatives: either Protestantism and the keeping holy of Saturday, or Catholicism and the keeping holy of Sunday. Compromise is impossible.” — James Cardinal Gibbons, in Catholic Mirror, December 23, 1893.
What exactly do you think is the meaning of the ‘infallibility of the Pope’?