They already are. Just one tiny well-explained example, although it's utterly rampant:
https://www.npr.org/2024/08/23/1197961495/the-trade-fraud-de...
No bribery required though, at least in most cases.
They tried stockpiling aluminum in Mexico during the Trump ban and that was shutdown quickly. I guess they just have to be more convoluted about it. I wonder if Trump will do something like “tariff China and any country that doesn’t tariff China itself (transitive)”, but it feels like it might be futile to do that.