Pope Francis greets then-U.S. Vice President Joe Biden at the Vatican in this April 29, 2016, file photo. Church and diplomatic experts are assessing how U.S.-Vatican diplomacy will change with Biden, as U.S. president. He is the second Catholic elected to the nation's highest office in U.S. history. (CNS photo/L'Osservatore Romano)
Anticipation of a new administration in Washington prompts questions about the future course of U.S.-Vatican relations. There is much on which a Biden administration and the Holy See can collaborate. President-elect Joe Biden and Pope Francis share many policy concerns, above all climate change, where Mr. Biden has pledged to re-join the Paris Climate Covenant.