  If there are no light Higgs bosons found below $\cal O$(800 GeV) or so, the
interactions among longitudinally-polarized vector bosons ($\wl$) will become
strong at the TeV region, and new physics that is responsible for the
electroweak symmetry breaking must emerge at this energy scale. We discuss the
phenomenological prospects of the Strongly-interacting Electro-Weak Sector
(SEWS) at future TeV linear colliders and hadronic supercolliders.
