ROME (AP) - On Saturday, Pope Leo XIV appointed Italian Archbishop Gabriele Caccia, 68, as the new ambassador of the Holy See to the United States. This appointment comes at a pivotal moment for U.S.-Vatican relations, which have been strained due to the Trump administration's military actions in Iran and its strict immigration policies. Caccia, who is currently serving as the Holy See's ambassador to the United Nations in New York, succeeds Cardinal Christophe Pierre, a French-born diplomat who is retiring at 80 years old.
Archbishop Caccia has a rich background in diplomacy, having served as the Holy See’s ambassador to Lebanon and the Philippines prior to his post at the U.N. in 2019. Ordained as a priest in Milan in 1983, he has also held the position of "assessor" within the Vatican's secretariat of state, an essential administrative role in the Holy See's central office. His new appointment places him in charge of dealing with complex issues regarding both the U.S. Catholic Church and state at a time when the global landscape is tumultuous.
During Cardinal Pierre's tenure, there were noticeable tensions between the U.S. Conference of Catholic Bishops, often regarded as conservative, and the progressive agenda championed by Pope Francis. The Holy See’s relationship with the United States is of vital importance, particularly due to U.S. Catholics being among the most significant donors to the Vatican. Pope Leo XIV, notably the first U.S.-born pope, is acutely aware of this dynamic, having acted as Pope Francis' liaison on bishop nominations before his election in 2025. He has stressed the importance of pacification and unity within the Church.
Particularly contentious has been the issue of migration under the Trump administration. Pope Leo has emphasized the need for the administration to respect the human dignity of migrants while affirming the right to secure borders. The ongoing Israel-Iran conflict has also drawn his attention; he has expressed "profound concern" and has called for an end to the violence. In recent comments, Pope Leo advocated for the resumption of diplomatic efforts, stating that weapons only bring about "destruction, pain, and death."
Earlier this year, during a significant foreign policy address, Pope Leo articulated his opposition to the aggressive military strategies employed by the U.S., implicitly referencing actions in Venezuela and threats toward Greenland. He condemned the use of force by nations to assert control, arguing that such actions severely undermine global peace and the post-World War II international legal framework.
Upon his appointment, Caccia expressed humility and gratitude for the opportunity to serve as ambassador to his native country. He described his mission as one of "communion and peace," noting that it coincides with the 250th anniversary of U.S. independence. Archbishop Paul S. Coakley, the president of the U.S. Conference of Catholic Bishops, welcomed Caccia’s appointment, extending a warm welcome and prayerful support from the U.S. hierarchy.
The Holy See is known for its tradition of diplomatic neutrality, yet Pope Leo XIV has made strong statements against the humanitarian consequences of Israel's military actions in Gaza and Russia's ongoing invasion of Ukraine. This ongoing commitment to addressing global humanitarian concerns suggests that Caccia’s role will require deft navigation of both the complexities of international diplomacy and the varied interests within the U.S. Catholic community.
