US Ambassador to the Holy See Brian Burch (L) welcomes US Secretary of State Marco Rubio (C) upon his arrival at the Rome's Ciampino airport on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Ambassador to the Holy See Brian Burch (R) and his wife Sara wait to welcome US Secretary of State at the Rome's Ciampino airport on May 7, 2026. US top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Ambassador to the Holy See Brian Burch (2nd R) welcomes US Secretary of State Marco Rubio (C) and his wife Jeanette Dousdebes Rubio upon their arrival at the Rome's Ciampino airport on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Ambassador to the Holy See Brian Burch (C-R) welcomes US Secretary of State Marco Rubio (C) and his wife Jeanette Dousdebes Rubio upon their arrival at the Rome's Ciampino airport on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Secretary of State Marco Rubio and his wife Jeanette Dousdebes Rubio arrive at the Rome's Ciampino airport for a two-day visit to Italy and the Vatican, on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Secretary of State Marco Rubio and his wife Jeanette Dousdebes Rubio arrive at the Rome's Ciampino airport for a two-day visit to Italy and the Vatican, on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Secretary of State Marco Rubio arrives at the Rome's Ciampino airport for a two-day visit to Italy and the Vatican, on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)

US Secretary of State Marco Rubio and his wife Jeanette Dousdebes Rubio arrive at the Rome's Ciampino airport for a two-day visit to Italy and the Vatican, on May 7, 2026. America's top diplomat, Marco Rubio, will visit the first US pope, Leo XIV, seeking to ease tensions between Washington and the Vatican while also promoting President Donald Trump's interests. (Photo by Andrew Medichini / POOL / AFP via Getty Images)