The Lynch amendment has to be one of the most bizarre pieces of legislation relating to derivatives I've ever seen—and that's saying something. Really, the amendment is just illogical. Introduced by Rep. Stephen Lynch, the amendment prohibits swap dealers and "major swap participants" from owning more than 20%, collectively, of a derivatives clearinghouse. Here's how Rep. Lynch justified his amendment on the House floor:
[T]he problem is—and in my view, this is a huge problem with the bill—the bill would allow these same big banks to purchase the clearinghouses that are being created to police the big banks in their derivatives trading. The big banks would be allowed to own and control the clearinghouses and to set the rules for how their own derivatives deals are handled. My amendment would prevent those big banks and major swap participants, like AIG, from taking over the police station—these new clearinghouses.This makes absolutely no sense. Rep. Lynch appears to be deeply confused about both clearinghouses and the derivatives market. Unfortunately, the Lynch amendment has been cheered on by the blogosphere, which now reliably swoons at any mention of hurting "Wall Street," seemingly without regard for the merits of the proposal.
Honestly, what do supporters of the Lynch amendment think clearinghouses are? The purpose of a clearinghouse is risk mutualization. If one clearing member defaults on a cleared contract, the other members—via the clearinghouse—will pick up the tab. That's why the clearinghouse, as the central counterparty (CCP), interposes itself between counterparties to contracts cleared through the clearinghouse, serving as the buyer to every seller and the seller to every buyer. The whole purpose of this set-up is to put all the clearing members on the hook for one clearing member's default. (If after applying a defaulting member's margin account, the money the other clearing members have contributed to the clearinghouse's guaranty fund still isn't sufficient to cover the losses from a member's default, the clearinghouse can generally force the other clearing members to make one-time contributions to cover the remaining losses.)