1995—Subsec. (a). Pub. L. 104–66 struck out at end “The Secretary shall submit to Congress each year a report as to whether and to what extent such displacements or substitutions are occurring.”

1985—Subsec. (a). Pub. L. 99–198 inserted at end “The Secretary shall submit to Congress each year a report as to whether and to what extent such displacements or substitutions are occurring.”

Pub. L. 98–92, § 2, Sept. 2, 1983, 97 Stat. 608, provided in part that this section is effective Oct. 1, 1983.