The country talked about as the one subsidizing their products, leading to the problem elsewhere, is not Mexico. Not sure what you were reading here. It's the USA.

And apparently, see the current topic, Mexico too thinks having a functioning farming sector is more important than having access to the cheapest goods. Other wise they would welcome that the US pays for them being able to import the products more cheaply because of the subsidies.

So, given that, I'm not sure why you think pointing to Mexico refutes my point?