[Avodah] Footnote to the Shulchan Aruch

[Rich, Joel via Avodah]

S"A O"C  55:11 as recorded in the 1st volume of the mishna brurah (it's not in my regular S"A) has a footnote delineated with *)  . The text of the S"A deals with the stauts of an avaryan who was not in nidui counting for a minyan. The footnote says nidui  doesn't apply "now" because dina dmalchuta has done away with nidui.   Anyone know who added this footnote?
KVCT
Joel Rich

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