
      Whenever merchandise is imported into the United States by sea
    for immediate exportation to a foreign port by sea, or by a river,
    the right to ascend or descend which for the purposes of commerce
    is secured by treaty to the citizens of the United States and the
    subjects of a foreign power, the Secretary of the Treasury is
    authorized to prescribe regulations for the transshipment and
    transportation of such merchandise.

Last modified: April 20, 2006