I think this is the correct sub forum to ask this in.  I might be wrong.

I know that the sspx position generally is that anyone who is Catholic and in a state of grace can receive holy communion.  By contrast groups like the sspv have other requirements, I believe they say that if you attend the NO sometimes or confess to new rite priests you aren’t allowed to commune at their chapels.

Could any Catholic walk into an sspx resistance chapel and commune or are there additional requirements?  And what’s the rationale 

No additional requirements.

There probably are SSPX chapels that allow a Catholic who is in a state of grace to receive Holy Communion, but at the SSPX chapel in my area, that's not the case. The monthly bulletin for the chapel here specifically states that one must be registered at the chapel in order to receive the sacraments.

That's typically a reference to Sacraments other than Communion and Confession (i.e. Baptism, Confirmation, Holy Matrimony, etc.).  I know of no SSPX chapel that will refuse Confession and Communion to people not registered with the chapel.  That would be against Canon Law.

Absolutely. As far as I know, any catholic can attend an SSPX Resistance Chapel and receive communion. As far as I know, I don't think there is additional requirements. I could be wrong. I know that the religious at an SSPX Resistance Chapel would definitely not want you to attend a Novus Ordo Mass. But, I might need someone else to back me up on this who knows more info. If you could, define more what you mean by rationale.

I know they wouldn't want you to, but I didn't know if they'd actually make it a requirement to receive communion, and it seems from your answer and others that they don't.

What I meant by rationale was *if* they had extra requirements what their defenses were.  For instance the SSPV won't commune people who attend the Novus Ordo or the indult, and they have various arguments for that position.  So *if* the SSPX Resistance had some kind of requirement like that (which they don't) I wanted to know what the reasons for it were.

That's typically a reference to Sacraments other than Communion and Confession (i.e. Baptism, Confirmation, Holy Matrimony, etc.).  I know of no SSPX chapel that will refuse Confession and Communion to people not registered with the chapel.  That would be against Canon Law.

What canon law would that be? And how would that apply in a state of necessity?

I don't receive Holy Communion, nor do I go to confession at the local SSPX chapel, because they don't allow it, since I'm not registered there. Not a big deal. They have a right to regulate their sacraments. Evidently, you don't agree with that.

Only public sinners can be refused Communion

What canon law would that be? And how would that apply in a state of necessity?

I don't receive Holy Communion, nor do I go to confession at the local SSPX chapel, because they don't allow it, since I'm not registered there. Not a big deal. They have a right to regulate their sacraments. Evidently, you don't agree with that.

No, they have no right to refuse the Sacraments to any Catholic who is in good standing and not in a state of public sin.  I'm not sure where you're getting it that they refuse Communion and Confession to people who are not registered.  I've never known that to be an SSPX policy.  If you saw something about it in the bulletin, it's undoubtedly a reference to the other Sacraments, like Baptism, Confirmation, Holy Matrimony.  I've gone to many SSPX chapels where I'm not a registered member and have received the Sacraments without issues.  So if I belong to an SSPX chapel in Cleveland but then am out of town in, say, Chicago, I can't go to Communion there because I'm not registered with the chapel.  It sounds like you're misinterpreting something here.

People have cited the Canon Law where the faithful have a right to receive the Sacraments.  I don't have it off hand.  Even the SSPV has re-stated this, that the only reason the Sacraments can be refused to a Catholic in good standing is due to public sin, except they classify lots of things as public sin.  Sacraments are not given to the SSPX to control at their whim, and I know of no priest of the SSPX who believes that either.  Just a before Vatican II, a Catholic can got to any Catholic Mass anywhere and receive the Sacraments without prior registration.

Your statement referring to "THEIR" Sacraments could not be more mistaken.  These are NOT "THEIR" Sacraments.