vatican city callista gingrich wife former speaker u.s. house representatives friday become u.s. ambassador vatican odds washington immigration climate change jerusalem callista gingrich 51 author documentary filmmaker former congressional aide present credentials pope francis vatican officially assume role husband newt gingrich early supporter vocal ally u.s. president donald trump newt gingrich expect continue role political contributor fox news new base rome trump nomination callista gingrich post holy see may cause controversy marriage gingrich become involve still marry second wife roman catholic thursday attend funeral vatican cardinal bernard law resign archbishop boston 15 years ago cover years sexual abuse children priests pope implicitly criticize trump decision pull paris accord climate change say last month deny climate change indifferent effect perverse attitudes block research dialogue aim protect future planet francis also oppose trump decision recognize jerusalem israel capital pontiff call respect city status quo say new tension middle east would inflame world conflict .. thursday unite nations vatican permanent observer status 120 countries defy trump vote favor resolution call unite state drop recent recognition u.s. embassy say statement new ambassador look forward work holy see defend human right advance religious freedom combat human traffic seek peaceful solutions crises around world callista gingrich become trump 's envoy pope differences mount