(a) Destruction, Concealment, Removal, Confiscation, or Possession of Immigration Documents.— It shall be unlawful for any person to knowingly destroy, conceal, remove, confiscate, or possess, an actual or purported passport or other immigration document of another individual —
(3) in order to, without lawful authority, maintain, prevent, or restrict the labor of services of the individual.
(b) Penalty.— Any person who violates subsection (a) shall be fined under this title, imprisoned for not more than 1 year, or both.
(c) Obstruction.— Any person who knowingly obstructs, attempts to obstruct, or in any way interferes with or prevents the enforcement of this section, shall be subject to the penalties described in subsection (b).