In 1784, the Vatican established the Apostolic Prefecture of the United States so as to remove American Catholics from the jurisdiction of a British diocese.

[7] In accord with the Second Vatican Council's reforms, he established the Steubenville Ecumenical Institute to foster better relationships among Christians and Jews.

In 1989, Ottenweller was arrested with other protestors outside a health clinic that provided abortion services for women in Youngstown, Ohio.

Pope Benedict XVI named Conlon as bishop of the Diocese of Joliet in 2011 and replaced him in Steubenville with Reverend Jeffrey Monforton of the Archdiocese of Detroit.

His plan included upgraded technology to allow broadcast of masses and other events, installing security systems to allow 24-hour visitation and restoring the towers that had been were removed in a 1957 renovation.

The diocese would also work with Holy Trinity Greek Orthodox Church, the Public Library of Steubenville and Jefferson County to revitalize the neighborhood.

Vicar General Kurt Kemo resigned from his church positions; he was later convicted of felony theft, having stolen over $289,000 from the diocese.

[14][15] A month later, after receiving significant negative feedback within the Diocese of Steubenville, Monforton announced that the proposal was on hold.

[16] In September 2023, Pope Francis appointed Jeffrey M. Monforton as auxiliary bishop of Detroit, transferring him from the Diocese of Steubenville.

[17] In October 2018, the Diocese of Steubenville published a list of 16 clergy and one seminarian who were either credibly accused of, or had admitted to, sexually abusing minors.

[18][19] In November 2018, Reverend Henry Foxhoven of Glouster pleaded guilty to three counts of sexual battery of a 17-year-old girl.

The suit also stated that an affidavit for a 2018 arrest warrant said that Foxhaven told Monforton that he had been "sexually involved with a juvenile member of his congregation and that she was now pregnant".

Morrier had been assigned by the university to counsel the college student, who was suffering from PTSD due to previous abuse.