Becuase they are the biggest fx market in the world and they do not want to lose that, and they have not parcipitated in the rules for leverage before either. So talk to people overthere and you will see. The fsa did not change their margin requirements. The reason we are doing it here is to drive business to the exchange so the cftc can make their money on all the volume they beleive will come their way. Thats why when last rules were changed in NOV many moved to UK firms, also the leverage was lowered by some UK firms not the FSA.