My apologies. I did not mean to misrepresent your question, i am just inept.

I cant answer for Mike, but I don't see how Kenedy's support for MAD would affect whether anyone considered him Catholic, other than those who consider someone as not Catholic if they disagree with the Church on anything. I suspect that Mike does not share that kind of a view, but believes both that JFK was a Catholic AND that he rejected Church teaching on MAD nad nuclear weapons. 

OTOH, I can see how support for MAD could affect whether someone is considered prolife. MAD has a direct connection to being "prolife" that is missing from Church membership.