FRANKFURT — A Burmese migrant worker is sold by traffickers as a slave to the owner of a Thai fishing boat. The catch of the boat is used to make fish meal to feed farmed shrimp. The shrimp wind up in supermarkets in the United States and Europe.

Issues of security and economics tend to attract the most attention at Group of 7 meetings. But when President Obama and other leaders of the nations in the group meet at the Bavarian spa resort of Schloss Elmau on June 7 and 8, one of the items on the agenda will be related to those Thai shrimp.

The leaders plan to discuss so-called supply chain standards — ways of ensuring that everyday products like food, electronics and jewelry do not come packaged with human misery as a hidden ingredient.

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