Pope Leo XIV, the first American leader of the Roman Catholic Church, used a landmark speech marking the United States' 250th anniversary of independence to praise the country's history of welcoming immigrants — a pointed, if implicit, rebuke of President Donald Trump's immigration crackdown. Speaking via video to the National Constitution Center in Philadelphia, where he was awarded the Liberty Medal, Leo called on Americans to recommit to the founding ideals of the Declaration of Independence, saying the word "America" had become "a byword for freedom" across the world precisely because of its tradition of openness to migrants.

Without naming Trump directly, Leo called for "a public discourse marked by moderation, respect for the views of others and an ongoing effort to find common ground." He spoke of how "successive waves of immigrants" had shaped the nation's future, and said he hoped the anniversary would be an occasion for a "solemn recommitment" to the principles of "unity, justice and peace" held by the founding fathers. The Spanish-language El País quoted him as stating that "the moral greatness of a nation is measured by its capacity to protect the most vulnerable."

The speech is the latest episode in a running tension between Leo and the Trump administration. The two have clashed repeatedly over the pope's criticism of harsh US immigration enforcement and, more recently, over the US-Israeli war against Iran — a conflict Leo strongly condemned. Trump has publicly called the pontiff "weak" on crime and "terrible" on foreign policy, while Leo has said he is "not afraid" of Trump. Days before Friday's address, Vice-President JD Vance — who visited Leo at the Vatican in May — described the Vatican's views on immigration as "troubling."

To mark the Fourth of July itself, Leo chose to spend the day not at any celebratory event in the United States — he has yet to accept Trump's White House invitation — but on Lampedusa, a small Italian island located closer to Tunisia than to the Italian mainland, which has for decades served as the main European arrival point for migrants crossing the Mediterranean from north Africa. There he visited a cemetery containing many unmarked graves of those who died at sea, and the Porta d'Europa, a memorial monument to migrants. The International Organization for Migration has recorded nearly 1,000 people dead or missing in the Mediterranean between January and early April of this year alone.

Vatican observers say the symbolism was unmistakable. "The pope is telling Trump what is important to him, and that is migrants," said Andrea Vreede, Vatican correspondent for Dutch broadcaster NOS. Marco Politi, a Vatican journalist and author, described the Lampedusa visit as both a political message against US immigration enforcement by ICE agents and a rebuke to European political parties that, in his words, "sow hatred and polarise." Leo's choice of venue on America's national day underscored that his disagreement with Trump's immigration policies is not merely rhetorical, but a defining theme of his papacy.