During his homily, Pope Benedict addressed the issue of unity, which has been a theme of his visit. He also celebrated the bicentennial of Catholic dioceses in Baltimore, Boston, New York, Philadelphia and Louisville, Kentucky and the tradition of religious freedom in the United States, which, he said, allowed successive waves of immigrants to build networks of strong churches and institutions.
"In this land of religious liberty, Catholics found freedom not only to practice their faith but also to participate fully in civic life, bringing the deepest moral convictions to the public square and cooperating with their neighbors in shaping a vibrant, democratic society."
The pontiff also delivered comments in Spanish, recognizing a growing Catholic population in the United States.
More than 550 priests were on hand to distribute communion to the participants.