((a)) ** In general** The Department of Homeland Security shall maintain statistics regarding petitions filed, approved, extended, and amended with respect to nonimmigrants described in , including the number of such nonimmigrants who are classified on the basis of specialized knowledge and the number of nonimmigrants who are classified on the basis of specialized knowledge in order to work primarily at offsite locations.section 1101(a)(15)(L) of this title
((b)) ** Applicability** Subsection (a) shall apply to petitions filed on or after the effective date of this subtitle.