  Baryon number (B) is automatically conserved in the standard SU(2) X U(1)
electroweak gauge model, but not in its supersymmetric extension where it must
be imposed as an extra condition. This undesirable feature is avoided in the
conventional left-right supersymmetric extension, but then flavor-changing
neutral currents (FCNC) are not naturally suppressed. A new version is proposed
with automatic B conservation as well as FCNC suppression (except for u quarks
through scalar exchange).
