18 U.S.C. § 3 : US Code - Section 3: Accessory after the fact

Search 18 U.S.C. § 3 : US Code - Section 3: Accessory after the fact

Whoever, knowing that an offense against the United States has
been committed, receives, relieves, comforts or assists the
offender in order to hinder or prevent his apprehension, trial or
punishment, is an accessory after the fact.
Except as otherwise expressly provided by any Act of Congress, an
accessory after the fact shall be imprisoned not more than one-half
the maximum term of imprisonment or (notwithstanding section 3571)
fined not more than one-half the maximum fine prescribed for the
punishment of the principal, or both; or if the principal is
punishable by life imprisonment or death, the accessory shall be
imprisoned not more than 15 years.