  We show how the spatial macroscopic entanglement equivalent to the off
diagonal long range order (ODLRO) implies the Meissner effect and flux
quantisation for a superconductor. It is argued by analogy with superconductors
that the Higgs field must also be entangled in the same way. Internal (spin)
entanglement is shown to be irrelevant within this context, although it can of
course also be computed.
