vatican city pope francis suggestion donald trump christian view immigration personal attack u.s. republican presidential candidate vatican spokesman father federico lombardi say friday lombardi tell vatican radio pope comment make reporters flight back mexico response specific question trump simply affirmation long-standing belief migrants help rather shut behind wall way personal attack indication vote lombardi say trump longtime republican party front-runner opinion poll dismiss pope disgraceful question faith say elect president november would build wall along u.s.-mexican border keep immigrants enter illegally lombardi say pope believe people build bridge wall add general view consistent courageously follow indications gospel offer welcome solidarity pope 's comment trump personal attack papal spokesman