The plan sponsors of multiemployer plans may establish or participate in a withdrawal liability payment fund.
Notwithstanding any other provision of this chapter, a fiduciary of the fund shall discharge the fiduciary’s duties with respect to the fund in accordance with the standards for fiduciaries prescribed by this chapter (to the extent not inconsistent with the purposes of this section), and in accordance with the documents and instruments governing the fund insofar as such documents and instruments are consistent with the provisions of this chapter (to the extent not inconsistent with the purposes of this section). The provisions of the preceding sentence shall supersede any and all State laws relating to fiduciaries insofar as they may now or hereafter relate to a fund to which this section applies.
No payments shall be made from a fund to a plan on the occasion of a withdrawal or partial withdrawal of an employer from such plan if the employees representing the withdrawn contribution base units continue, after such withdrawal, to be represented under section 159 of this title (or other applicable labor laws) in negotiations with such employer by the labor organization which represented such employees immediately preceding such withdrawal.
Nothing in this section shall be construed to prohibit the purchase of insurance by an employer from any other person, to limit the circumstances under which such insurance would be payable, or to limit in any way the terms and conditions of such insurance.
The corporation may provide by regulation rules not inconsistent with this section governing the establishment and maintenance of funds, but only to the extent necessary to carry out the purposes of this part (other than section 1402 of this title).