Americans were commemorating 9/11 with somber tributes, volunteer projects and a new monument to victims Tuesday, after a year when two attacks demonstrated the enduring threat of terrorism in the nation's biggest city.

Just 25 percent of Americans say it's very or extremely important that a candidate has strong religious beliefs, according to the poll.

Afghan rights workers warned Tuesday that the U.S. national security adviser's blistering attack on the International Criminal Court investigating war crimes allegations will strengthen a climate of impunity in Afghanistan, prolong the war and embolden those carrying out acts of violence.

Bishops must remember, particularly when under attack, that their role is to pray, be humble in knowing God chose them and remain close to the people, Pope Francis said in his morning homily.

Bishop Christopher J. Coyne of Burlington pledged to cooperate with state and local officials investigating reports of alleged abuse of former residents of a Catholic orphanage.

The country that is home to the Nobel prizes and militarily neutral policies for the better part of two centuries has been known for its comparatively open doors to migrants and refugees.