The best story is about how U.S. sugar producers took pains to make sure imported sugar was not included in exports:
In the end, the negotiators devised a compromise: At least 65 percent of the sugar in products containing cocoa powder must be from U.S. growers to be considered American-made. Otherwise tariffs will apply, which could make the product prohibitively expensive. But no such restrictions apply on sugar that’s used to make candy bars. In other words, a packet of instant hot chocolate that contains 64 percent U.S.-grown sugar is not considered American under the deal. But a chocolate bar made with 100 percent foreign sugar is.
Literally thousands of such details in each agreement. Not much value being created, is there?