The contrast between President Donald Trump and Chicago-born Pope Leo XIV couldn't be more stark, politically, personally or in their world views. They lead in different roles and realms. But Leo's historic election last week to lead the world's 1.4 billion Catholics as the first U.S.-born pope means that the two most powerful people on the planet are Americans. That raises questions about American influence at a time when Trump's tariff wars and "one way or the other" threats have upended eight decades of global order and sparked distrust among allies toward the U.S. The prospect of too much American power in geopolitics is considered one reason that the Catholic Church had never elected an American to the papacy.