; and (B) the Government share of any premiums or other periodic charges under chapter 89 of title 5, United States Code, governing group health insurance shall remain at least the same as was the case immediately before the conversion date. (3) GAO study on TSA pay rates Not later than the date that is 9 months after the date of enactment of this Act, the Comptroller General shall submit a report to Congress on the differences in rates of pay, classified by pay system, between Transportation Security Administration employees— (A) with duty stations in the contiguous 48 States