  The effects of the axial anomaly are suppressed at high temperatures due to
screening effects in the quark-gluon plasma. If the suppression is nearly
complete close to the chiral transition temperature, this can have consequences
for the nature of the phase transition. The use of a chiral action such as
Domain Wall Fermions allows us to gain a deeper insight into the issue. Our
lattice sizes were $16^3\times 8\times L_s$, with $L_s=32$ or 48, and our pion
mass was approximately 200 MeV. We found that $U(1)_A$ stayed broken above the
chiral transition. However the breaking was found to be due to topologically
nontrivial configurations which raises the question as to whether it persists
in the thermodynamic limit. We also present results for the eigenvalue density
of the Dirac operator. It is seen that although the density decreases
dramatically across the chiral transition temperature, $U(1)_A$ still remains
broken at our current volume and quark mass due to the presence of zero modes.
