“Pope Leo has used his first key address to his home country to praise the U.S. history of welcoming migrants, urging Americans to live up to the ideals put forward in the Declaration of Independence,” The Guardian reports.“In his latest implicit rebuke to Donald Trump, the first U.S. leader of the Roman Catholic church said the word ‘America’ had become a ‘byword for freedom’ across the world because of the way the country welcomed migrants.”