  HESS J1943+213 is a very-high-energy (VHE; >100 GeV) gamma-ray point source
detected during the H.E.S.S. Galactic Plane Survey. Radio, infrared, X-ray, and
GeV gamma-ray counterparts have been identified for HESS J1943+213; however,
the classification of the source is still uncertain. Recent publications have
argued primarily in favor of an extreme BL Lac object behind the Galactic
plane, though the scenario that HESS J1943+213 is a young pulsar wind nebula is
viable as well. We present deep VERITAS observations of HESS J1943+213, which
provide the most significant VHE detection of the source so far, with ~18 sigma
excess. The source is detected at ~2% Crab Nebula flux above 200 GeV with
VERITAS, with the source spectrum well fit by a power-law function and showing
agreement with the H.E.S.S. detection. We also include results from analysis of
Swift XRT observations contemporaneous with VERITAS. No significant flux or
spectral variability is detected with VERITAS or Swift XRT observations. We
place the VERITAS results in a multi-wavelength context to comment on the HESS
J1943+213 classification.

High Energy Astrophysical Phenomena