; and (B) interest on any such amounts (at a rate determined by the Commission). (2) Other action not precluded Any action by the Commission in accordance with this subsection shall not preclude enforcement proceedings by the Commission in accordance with section 309(a), including a referral by the Commission to the Attorney General in the case of an apparent knowing and willful violation of this title. . 2103. Exception to limitation on coordinated expenditures by political party committees with participating candidates Section 315(d) of the Federal Election Campaign Act of 1971 ( 52 U.S.C. 30116(d) ) is amended— (1) in paragraph (3)(A), by striking in the case of and inserting except as provided in paragraph (5), in the case of ; and (2) by adding at the end the following new paragraph: (6) (A) The limitation under paragraph (3)(A) shall not apply with respect to any expenditure from a qualified political party-participating candidate coordinated expenditure fund. (B) In this paragraph, the term qualified political party-participating candidate coordinated expenditure fund means a fund established by the national committee of a political party, or a State committee of a political party, including any subordinate committee of a State committee, for purposes of making expenditures in connection with the general election campaign of a candidate for election to the office of Senator who is a participating candidate (as defined in section 501), that only accepts qualified coordinated expenditure contributions. (C) In this paragraph, the term qualified coordinated expenditure contribution means, with respect to the general election campaign of a candidate for election to the office of Senator who is a participating candidate (as defined in section 501), any contribution (or series of contributions)— (i) which is made by an individual who is not prohibited from making a contribution under this Act