However, in modern times, the Western Church has rejected the part of the Nicene formula that requires that Pascha “always follow the Jewish Passover.” Western theologians (and, unfortunately, a few misguided Orthodox Theologians as well) now claim that this provision was never a part of the council’s intention, saying that it is not necessary for Pascha to follow the Jewish Passover. This is hard to understand since, by rejecting this provision of the council, they ignore that the celebration of Jesus’ Resurrection was celebrated at the same time from 325-1582, as well as the written witness of early Church historians and even earlier canons such as Canon VII of the Apostolic Canons which reads: “If any Bishop, or Presbyter, or Deacon celebrate the holy day of Pascha before the vernal equinox with the Jews, let him be deposed.”
Ah, another 'let him be deposed.' This and more were declared to be the consequences for adding stuff the creed.
Quite aside from doctrine, any serious reading of the councils will have you looking at your church with the same askance as when you hear a politician make yet another unconstitutional declaration, or worse, pass another illegal law.