aboard papal plane pope francis say saturday meet bernie sanders contest democratic candidacy u.s. presidency meddle politics anyone think otherwise look psychiatrist sanders pope meet briefly saturday morning vatican guest house francis live sanders wife spend night address vatican conference social justice come greet shake hand nothing call good manners get involve politics pope tell reporters answer question aboard plane return greek island lesbos visit refugee camp l5n17j063 anyone think greet someone get involve politics recommend look psychiatrist say laugh interview abc news meet sanders call pope beautiful man add catholic radiance come him convey admiration extraordinary work raise important issue face planet billions people planet inject need morality global economy sanders brooklyn-born son polish jewish immigrants tell abc democratic hopeful vermont campaign promise rein corporate power level economic play field work lower-income americans say leave behind message echo pope meet come days tuesday democratic party primary new york poll say trail hillary clinton seven last eight state contest loss sanders home state would give front-runner clinton boost toward party presidential nomination sanders say trip pitch catholic vote testament admiration pontiff pope say crazy see meet bernie sanders political