According to the Mahzor Aram Soba of
1527 and 1560, conversions were
normative, but rare, as there are
blessings in the Mahzor on the rituals
of conversions. However, in the early
twentieth century the Syrian Jewish
communities of New York and Buenos
Aires adopted rulings designed to
discourage intermarriage. The
communities would not normally carry
out conversions to Judaism,
particularly where the conversion is
suspected of being for the sake of
marriage, or accept such converts from
other communities, or the children of
mixed marriages or marriages involving
such converts.
The ban is popularly known within the
Syrian community as the "edict" or
"proclamation" (in Hebrew, takkanah).
Every twenty years or so, the edict is
reaffirmed by all leaders and rabbis
of the community, often with extra
clauses. A full list is as follows:
Buenos Aires, 1927 (R. David Setton)
New York, 1935 (Hacham Hayim Tawil)
New York, 1946 "Clarification" New
York, 1972 "Affirmation" New York,
1984 "Reaffirmation" New York, 2006
"Reaffirmation"
http://en.wikipedia.org/wiki/Syrian_Jews