(a) Imposition of Concurrent or Consecutive Terms.— If multiple terms of imprisonment are imposed on a defendant at
the same time, or if a term of imprisonment is imposed on a defendant who is
already subject to an undischarged term of imprisonment, the terms may run
concurrently or consecutively, except that the terms may not run consecutively
for an attempt and for another offense that was the sole objective of the
attempt. Multiple terms of imprisonment imposed at the same time run
concurrently unless the court orders or the statute mandates that the terms are
to run consecutively. Multiple terms of imprisonment imposed at different times
run consecutively unless the court orders that the terms are to run
concurrently.
(b) Factors To Be Considered in Imposing Concurrent or Consecutive
Terms.— The court, in determining whether the terms
imposed are to be ordered to run concurrently or consecutively, shall consider,
as to each offense for which a term of imprisonment is being imposed, the
factors set forth in section 3553 (a).
(c) Treatment of Multiple Sentence as an Aggregate.— Multiple terms of imprisonment ordered to run consecutively or
concurrently shall be treated for administrative purposes as a single, aggregate
term of imprisonment.