Other Christian groups outside the Catholic Church declared this as the triumph of what they termed "the heresy of ultramontanism". It was specifically decried in the "Declaration of the Catholic Congress at Munich", in the Theses of Bonn, and in the Declaration of Utrecht, which became the foundational documents of Old Catholics ("Altkatholische") who split with Rome over the declaration on infallibility and supremacy, joining the Old Episcopal Order Catholic See of Utrecht, which had been independent from Rome since 1723.