; and (2) by adding at the end the following new subsection: (i) Not later than 18 months after the date of enactment of this subsection, and again 5 years thereafter, the Comptroller General shall complete and issue a review of the effectiveness of State plans to develop and enforce safety and health standards to determine if they are at least as effective as the Federal program and to evaluate whether the Secretary’s oversight of State plans is effective. The Comptroller General’s evaluation shall assess— (1) the effectiveness of the Secretary’s oversight of State plans, including the indices of effectiveness used by the Secretary; (2) whether the Secretary’s investigations in response to Complaints About State Plan Administration (CASPA) are adequate, whether significant policy issues have been identified by headquarters and corrective actions are fully implemented by each State; (3) whether the formula for the distribution of funds described in section 23(g) to State programs is fair and adequate; and (4) whether State plans are as effective as the Federal program in preventing occupational injuries, illnesses and deaths, and investigating discrimination complaints, through an evaluation of at least 20 percent of approved State plans, and which shall cover— (A) enforcement effectiveness, including handling of fatalities, serious incidents and complaints, compliance with inspection procedures, hazard recognition, verification of abatement, violation classification, citation and penalty issuance, including appropriate use of willful and repeat citations, and employee involvement; (B) inspections, the number of programmed health and safety inspections at private and public sector establishments, and whether the State targets the highest hazard private sector work sites and facilities in that State; (C) budget and staffing, including whether the State is providing adequate budget resources to hire, train and retain sufficient numbers of qualified staff, including timely filling of vacancies