; or (ii) such later date as the Secretary may prescribe. (B) Termination of employee participation Subject to a requirement for reasonable notice, an employee may elect to terminate participation in the arrangement at any time during a calendar year. The arrangement may provide that, if an employee so terminates participation, the employee may not elect to resume participation until the beginning of the next calendar year. (C) Notice of election period The employer shall notify each employee eligible to participate for a year in a USA Retirement Fund arrangement, within a reasonable period of time before the 30th day before the beginning of such year (and, for the first year the employee is so eligible, the 30th day before the first day such employee is so eligible), of— (i) the payments that may be elected or treated as elected under paragraph (1)(B); (ii) the opportunity to make the election to terminate participation in the arrangement under subparagraph (B); (iii) the opportunity to make the election under paragraph (1)(B)(ii) to have contributions or purchases made at a different percentage or in a different amount; and (iv) the opportunity under paragraph (1)(B)(iii) to modify the manner in which such amounts are invested for such year. (D) Employees may choose usa retirement fund The arrangement shall provide that a qualified employee may elect to have contributions made to any USA Retirement Fund available to the employee. (4) Amount of contributions and payments The amount specified in this paragraph is— (A) 3 percent of compensation for the calendar year beginning on January 1, 2019; (B) 4 percent of compensation for the calendar year beginning on January 1, 2020; (C) 5 percent of compensation for the calendar year beginning on January 1, 2021