If China's growth is subsidized at all, it's surely subsidized by the amount of goods we buy from them.
But they are a growing competitor with the United States and clearly want to control Asia and the Pacific.
Meanwhile, we have a border problem with Mexico, another country with a lot of impoverished citizens. If we're going to do a lot of trade with a country, Mexico makes a lot more sense than China. Improving their economy could eventually totally eliminate the problem of undocumented "illegal" workers coming across the border for work.
Yet, I hear neither candidate promoting this idea? Why don't they?
Or, as the lion said to the leopard, "Let us prey --"
I suspect that is because they - to their detriment - have not chosen to employ you as their advisor.
Actually Obama was working in that direction I believe, general systems theory is getting more and more well known even at the street level. The president is I believe a systems thinker. Because someone draws an imaginary line on the ground, calls it a boundary/boarder does not mean it is an independent system, all systems are open system, and helping Mexico is not a selfless act, but could only be in the interest of all parties concerned, Your suggestion connotes systems thinking.