  We critically re-examine the case for and against a sizeable right-handed
component in the $b\to c$ charged current coupling with a strength $\xi$
relative to the conventional left-handed current. Using data from CLEO on the
decay $B\to D^*\ell \nu$, as well as our knowledge of $V_{cb}$ extracted from
both inclusive and exclusive processes, we are able to determine the presently
allowed parameter space for $\xi$ via HQET. We then identify several
observables which could be measured at $B$ factories to either strengthen these
constraints or otherwise observe right-handed currents. This parameter space
region is found to be consistent with the low degree of $\Lambda_b$
polarization as determined by ALEPH as well as the measurements of the charged
lepton and neutrino energy spectra from $b$ decay made by L3. We discuss how
future measurements of semileptonic decay distributions may distinguish between
exotic $\Lambda_b$ depolarization mechanisms and the existence of right-handed
currents. Within the parameter space allowed by CLEO, using the Left-Right
Symmetric Model as a guide, we perform a detailed search for specific
sub-regions which can lead to a reduction in both the $B$ semileptonic
branching fraction as well as the the average yield of charmed quarks in $B$
decay. The results provide a concrete realization of an earlier suggestion by
Voloshin but may lead to potential difficulties with certain penguin mediated
decay processes.
