Lots of relatively rich countries are in the TPP, including my country, NZ. It has significant rules protecting labour and environmental conditions. It's fine.
From your link:
> The surplus with Mexico turned into a chronic deficit. And the economic dislocation in Mexico increased the the flow of undocumented workers into the United States.
So they're saying that jobs moving from the USA to Mexico increased the flow of Mexican workers to the USA? That makes no sense at all.
The other side of the NAFTA coin was that it allowed US agribusiness to dump products like corn in Mexico at below-market prices, driving many small-scale Mexican farmers into poverty. At that point, they could either work as low-paid maquiladores (the border factories etc.) in Mexico or become Mexican expats at significantly better wages in the US agriculture, construction, restaurant, hotel & golf course etc. sectors.
The neoliberal project in a nutshell involved the outsourcing of unionized well-paid domestic manufacturing jobs overseas, on one hand, and the import of cheap expat labor to fill jobs that couldn't be moved offshore, driving down labor costs and creating hundreds of new billionaires, who used their money to buy more politicians to lock in the programs and prevent any change.
From your link:
> The surplus with Mexico turned into a chronic deficit. And the economic dislocation in Mexico increased the the flow of undocumented workers into the United States.
So they're saying that jobs moving from the USA to Mexico increased the flow of Mexican workers to the USA? That makes no sense at all.