We demonstrate that there are regions of parameter space in the
next-to-minimal (i.e. two-Higgs-doublet, one-Higgs-singlet superfield)
supersymmetric extension of the SM for which none of the Higgs bosons are
observable either at LEP2 with s=192GeV and an integrated luminosity
of L=1000inversepb or at the LHC with L=600inversefb.Comment: 6 pages, full postscript file also available via anonymous ftp at
ftp://ucdhep.ucdavis.edu/gunion/nmssm_sm96.ps To appear in ``Proceedings of
the 1996 DPF/DPB Summer Study on New Directions for High Energy Physics'