6D Ionization Cooling of Muons and a Muon Collider/Higgs Factory

We describe the progress in the simulation of 6D cooling of μ beams for use in neutrino factories and muon colliders. We concentrate on the final cooling needed to reach the emmittance required for a SUSY Higgs factory using high-pressure gas ring coolers and Li lens ring coolers. Physics arguments are given for the need of such colliders if the A/H bosons are discovered at the LHC.