  It is shown that using Noether's Theorem explicitly employing gauge
invariance for variations of the electromagnetic four-potential $A^\mu$
straightforwardly ensures that the resulting electromagnetic energy-momentum
tensor is symmetric. The Belinfante symmetrization procedure is not necessary.
The method is based on Bessel-Hagen's 1921 clarification of Noether's original
procedure, suggesting that the symmetry problem arises from an incomplete
implementation of Noether's Theorem. The derivation addresses in some detail
where the usual application of Noether's Theorem falls short, what the
Belinfante procedure actually does to fix the problem, and why the usual
unsymmetric canonical energy-momentum tensor can only be used for extracting
four-momentum conservation based on translational invariance, but will provide
meaningless results when applied to rotations or boosts, unless modified
appropriately.
