The choice of an American pontiff is "a shock", says Catholicism historian Miles Pattenden, in a time when the United States have "too much power in the world", but he argues "we shouldn't let President Trump's views dissuade us from picking someone who is obviously the right man. Robert Francis Prevost became Pope Leo XIV on Thursday after cardinals from around the globe chose him as the first American leader of the world's 1.4 billion Catholics. SOUNDBITES