First of all, it's not a matter of "being Catholic," it's being baptized. If you're baptized validly, you've been made a member of the Body even as a heretic.
Second of all, we don't go in for any of this nonsense that people are ensured salvation at some point when they become a member of the Body. As Christ said, the tares grow with the wheat in the Kingdom of Heaven--and no man can tell them apart until the former are brought out to be burned.
All Christians are baptized. I understand some sects claim that isn't true. All baptized people are part of the Body of Christ. All from the Church perspective are part of the flock even if they refuse to recognize that fact.
Christians in union with Rome, are Catholics. There are Catholics that are not in union with Rome, and they are called various names, but are excluded from Communion.
Only Catholics who are in good standing with the Church, following the requirements, may take Communion, all others are denied this privilege.
This is not difficult, if you are baptized you are part of Christs flock. The Church considers you one of its own from that point forward.
Its also why its a sure indicator that people are being stupid by saying "Catholic Christian". its like saying I am a "Human Mammal"
As Christ said, the tares grow with the wheat in the Kingdom of Heaven--and no man can tell them apart until the former are brought out to be burned.
Problem is, the tares get baptized right along with the wheat...
I guess what you are saying is that once you get baptized, you automatically turn into wheat...But then we're getting down to the brass tacks...Everyone who can make the claim of being Catholic has been baptized...Therefore, there are no tares mixed in with the Catholic wheat...There could be no tares in your Catholic church...And of course that's not true...AND, you just shot to pieces the scripture you use to show there are tares and wheat in your Catholic church...
You have to really mangle the scripture to come to your conclusion...
I'll continue an another post...