That's really interesting. I suppose I am a bit cynical and feel he may be using it to his advantage for the Irish American and Catholic vote, but then, as you say, if this is normal stateside, then that's OK.
I have no axe to grind by the way. I am half Italian and Catholic, and although I love visiting Italy, and all my relatives, and spent many month long holidays there as a child, I wouldn't really call myself of Italian extraction, although technically half Italian, as I was born in the UK, and DM (Italian) came here when she was only 17.