Bateman's statement is partially correct. It's true that the Catholic Church has a Jew at the top, but this has been true for 2000 years and has been anything but covert.
"Jesus, when he began his ministry, was about thirty years of age, being the son (as was supposed) of Joseph, the son of Heli, the son of Matthat, the son of Levi, the son of Melchi, .... the son of Mattatha, the son of Nathan, the son of David..." - Luke 3:23-38
Not to mention Peter.