It is sort of the same process as the Girl Scouts do with the First Lady being the "honorary president" of their organization...by virtue of the fact that he is "the Pope" he is considered a member.
I am good friends with their ED, I will email him and ask
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"Pam" Bäckström, DY '81, WSU, Dayton, OH - Bloomington, IN
Phi Mu - Love.Honor.Truth - 1852 - Imagine.Believe.Achieve - 2013 - 161Years of Wonderful -
Proud to be a member of the Macon Magnolias - Phi Mu + Alpha Delta Pi