Pub. L. 108–173, title I, § 107(e), Dec. 8, 2003, 117 Stat. 2171, provided that:

“(1) Study.—The Comptroller General of the United States shall conduct a study to determine the extent to which drug utilization and access to covered part D drugs under part D of title XVIII of the Social Security Act [this part] by subsidy eligible individuals differs from such utilization and access for individuals who would qualify as such subsidy eligible individuals but for the application of section 1860D–14(a)(3)(A)(iii) of such Act [subsec. (a)(3)(A)(iii) of this section].

“(2) Report.—Not later than September 30, 2007, the Comptroller General shall submit a report to Congress on the study conducted under paragraph (1) that includes such recommendations for legislation as the Comptroller General determines are appropriate.”