The Argentine Jesuit was asked to provide counsel to American Catholic voters during an airborne news conference while he flew back to Rome from his four-nation tour through Asia.
Francis was speaking in a press conference with journalists after a demanding 12-day tour across Southeast Asia and Oceania.
Pope Francis accused both US Presidential hopefuls as being 'against life', describing them as 'one who discards migrants and one who kills children' in a rare voicing of his political views.
Washington DC: Pope Francis criticised former President Donald Trump and Vice President Kamala Harris over their stance of immigration and abortion respectively, and termed the upcoming US elections as a choice between the "lesser of two evils," CNN reported.