Burke is quite a decent man, and lives in Italy. He is a polyglot, and speaks Latin fluently, so he is definity Vatican City material more than American by now.
As for the socialism part, well, all I can say is to repeat the words of Pope Pius XI in Quadragesimo Anno, "No man can at the same time be a devoted Catholic and a sincere Socialist."
Yet, the supposed leading African Cardinal candidate for the Papacy is an extreme socialist. Although I have read that he has hurt his chances as it appears he has committed one of the cardinal no - nos for a conclave. It appears he has either actively or appeared to actively campaign for the job.