In short, for “policies affecting the exchange rate” to become part of trade agreements, monetary and fiscal policies would have to become part of trade agreements. In that case, there would be no trade agreements at all.
简言之，要在贸易协定中纳入“影响汇率的政策”方面的内容的问题，那么货币和财政政策都会变成贸易协定的一部分。这样一来，贸易协定根本无从谈起。