Constantine was not a bishop, he was pontifex maximus, he appointed bishops ,Yes
No.
The actual presiding figure within the council was Hosius of Cordoba, a prominent bishop who acted as the papal legate representing Pope Sylvester I.
Until such time as you can provide evidence that Constantine was ordained a bishop, and had a vote at the Council, you are up the creek without a paddle.
and had the power to exile bishops, as did his son, who exiled Ossius/Hosius (bishop of Cordoba and representative of the bishop of Rome), under pressure from Constantine's real top adviser, who was the Arian, Eusebius. Hosius of Corduba - Wikipedia There was no Roman pope at the time of the 325 A.D. Council of Nicaea. There was a "bishop of Rome". Using the term "pope" is simply a revision of status. His supposed title of "pontificate" is one purloined from the pontifex maximus, Constantine, who inherited the position from Julius Caesar, who held the office of pontifex maximus, chief priest of the pagan religion. There is no evidence that your "Hosius", bishop from Spain, presided over the Council, other than his name was found high on the list of attendees. The record shows that Constantine presided over the council. The Council of Nicaea: Pagan Emperor Constantine Used Christianity to Unify Church and State But then again, you appear to be of the me-to generation, and what comes out of your mouth comes straight from God.
. Although Constantine was also present at the council, and presided over it as an honorary president, he left the direction of the theological debates to the ecclesiastical leaders. The Council of Nicaea: Pagan Emperor Constantine Used Christianity to Unify Church and State
On the other hand, the Christian church benefited immensely from Constantine's generosity and devotion. Eventually, he decreed that those engaged in ecclesiastical duties received the same privileges accorded pagan priests. In earnest both clergymen, and the churches, were exempt from taxation. The Christian church also acquired the right of inheritance, meaning that anyone could entrust their possessions to the church. (64) Constantine kept to himself the power to appoint bishops.
Bishop of Rome
Pope Sylvester I (also known as Silvester) was the bishop of Rome from 31 January 314 until his death on 31 December 33512. His pontificate saw the beginnings of the Christian Roman Empire, and he was the first Pope of Rome to reign entirely under the liberty of the Church, guaranteed by the Edict of Milan in 313.