Charge the CEOs of companies that buy cocoa with child abuse.
https://www.cnbc.com/2021/06/17/supreme-court-rules-in-favor...
They were sued. That's reasonable. (SCOTUS overturned it. I don't know the relevant law well enough to comment on it.)
Criminally charging executives would be tantamount to putting Ghana's cocoa sector under U.S. sanctions.