“ Sec. 2 In conjunction with section 307 (a) of the Central Intelligence Agency Retirement Act of 1964 (50 U.S.C. 2157 (a) ) , the Director shall provide for an open enrollment period from November 1, 1998, to April 30, 1999, during which employee participants in the Central Intelligence Agency Retirement and Disability System may elect to become subject to the Federal Employees' Retirement System, comparable to the election for civil service employees provided for by the Federal Employees' Retirement System Open Enrollment Act of 1997, Public Law 105-61. ”