I think from a purely Theological point of view, yes he is Catholic, by virtue of the Sacrament of Baptism. Theologically, their is a indelible spiritual mark on the Soul. So those Catholics who know the faith must be consistent. Even Andrew Cuomo, who is obviously at best a luke-warm Catholic or even one who is a bad Catholic, is still Catholic.
I go to a Baptist church in Scranton. Anyone who believes in the slaughter of human beings in the womb has torn up his or her Christianity card, in my view. To my knowledge, not one of us believes in this savagery.