We don't even need to theorize how this can go wrong. We've got a real example: the French CFA system that is used to do economic colonialism in West Africa [1]. Basically, it works like this:
14 French-speaking Africian former colonies keep significant (>50%) of their gold reserves with the French treasury and use the CFA Franc as a currency, which is pegged to the Euro.
The colonial model is one of discouraging or even outright banning being self-sufficient. Crops that might otherwise feed the local populace are replaced to exportable cash crops. In particular, that's the World Bank/IMF model of "helping".
Anyway, Germany isn't a US imperial interest in the same way Cote d'Ivoire is for France... yet. Still, there are other mechanisms beyond gold that the US uses to influence or even control Germany (ie NATO).
14 French-speaking Africian former colonies keep significant (>50%) of their gold reserves with the French treasury and use the CFA Franc as a currency, which is pegged to the Euro.
The colonial model is one of discouraging or even outright banning being self-sufficient. Crops that might otherwise feed the local populace are replaced to exportable cash crops. In particular, that's the World Bank/IMF model of "helping".
Anyway, Germany isn't a US imperial interest in the same way Cote d'Ivoire is for France... yet. Still, there are other mechanisms beyond gold that the US uses to influence or even control Germany (ie NATO).
[1]: https://www.brookings.edu/articles/how-the-france-backed-afr...