  One dimensional chiral Hubbard model reduces to the Haldane-Shastry spin
chain at half-filling with large but finite on-site energy $U$.In this talk, we
show that the Gutzwiller-Jastrow wavefunctions are the eigen-states of the
Hubbard model at $U=+\infty$ at less than half-filling. The full energy
spectrum and an infinite set of mutually commuting constants of motion are also
given in this limit for the system.
