He went on: "Priests were raping little boys and girls, and the men of God who were responsible for them not only did nothing. And we believe your truth", Shapiro said.
The church in Chile has most recently been rocked by accusations of a wide-scale cover-up of child abuse during the 1980s and 1990s.
Hundreds of pages long, the report will reveal the findings of one of the most expansive probes into clerical sexual abuse since an expose of widespread abuse and systematic efforts to cover it up rocked the Archdiocese of Boston almost two decades ago.
In a statement on Monday before the report was published, Cardinal Donald Wuerl, the former Bishop of Pittsburgh who now heads the Archdiocese of Washington, said the report "will be a reminder of the grave failings that the church must acknowledge and for which it must seek forgiveness".
Peter Isely, a longtime advocate for victims of sexual abuse, said groups have always been pressing the US government for a national investigation of child sex abuse, especially in the Catholic Church. It found that church leaders in Pennsylvania covered up child sex abuse by hundreds of priests over 70 years.
Pennsylvania Attorney General Josh Shapiro holds hands with Judy Deaven who says her son was a victim of sexual abuse by a priest as a boy, during a news conference at the Pennsylvania Capitol in Harrisburg, on August 14, 2018.
Court records in a largely secret, months-long legal fight over the report say that it identifies more than 300 "predator priests".
In one case a boy was made to pose naked as if being crucified and then was photographed by a group of priests who produced and shared child pornography on church grounds.
"As a outcome of the coverup, nearly every instance of abuse we found is too old to be prosecuted", the report said.
The diocese already released a list of names of clergy and laypersons who were credibly accused of actions that, in the diocese's judgment, disqualify them from working with children.
Shapiro vowed to go to court to get the redactions in the report removed. "Ever since I first met victims of clergy child sexual abuse in 1988, I have seen the enormous pain that this crime causes to its victims, to their loved ones and to the heart of Jesus".
"The grand jury has challenged us as a Catholic diocese to put victims first and to continue to improve ways to protect children and youth", Bishop Lawrence Persico of the Erie Diocese said in a statement.
In the Diocese of Pittsburgh, for example, a few priests named in the report are still working there because diocesan officials could not substantiate claims of abuse made against them, Pittsburgh Bishop David Zubik told local reporters last week.
The report cited 301 priests, some of whom have died.
Rozzi called on fellow legislators to pass measures that would eliminate the statute of limitations for criminal prosecution of sexual abuse of children.
That report led to a second grand jury investigation in 2011 to determine whether the Philadelphia diocese had updated its practices and stopped protecting accused clergymen.
"The main thing was not to help children, but to avoid scandal", says the report. Bishop Gainer said the Diocese of Harrisburg Youth Protection Program is dedicated to the healing and reconciliation of victims of sexual abuse as a minor.
On August 1, the leader of one of the largest Roman Catholic dioceses in Pennsylvania released a list identifying 71 priests, deacons and seminarians accused of "substantiated" sexual misconduct over the past seven decades. He went on to say that he will fight to reveal the names now redacted in the report.
The grand jury's report comes at a time of renewed scrutiny and fresh scandal at the highest levels of the U.S. Catholic Church.
"Due to the churches' manipulation of our weak laws in Pennsylvania, too many predators are out of reach", Shapiro said.
"Further, in his deposition, when Connare was specifically asked if he informed the pastor of Holy Family of the reason Dellamalva was being transferred to his parish, Connare stated that he did not", read the report.
Since the abuse crisis became public in the 2000s, the United States church has spent more than $3 billion in settlements, according to Bishop Accountability.