I think it boils down to international bullying. the US is the self appointed enforcer/expoter of its own law. Its a matter of enforcement really, who's big enough? if there were a war/crash tomorrow & the US slipped off its top spot to Russia/China I believe the US would lose its ability to substantiate or maintain such a clause/foreign policy.
Printed copy · Anthology Volume 3, page 1183Printed copy from The Tender For Law Anthology, Volume 3, page 1183 (printed 13 June 2014). Added by this site; not part of the Facebook export.