After having taught American Government for many years and reading a lot of material on the Constitution by a lot of folks, both liberal and extremely conservative (John Birch Society among others) I have to conclude that the Founding Fathers built into the document a mechanism to allow the President to effectively fulfill his role as provided in the Constitution to negotiate with foreign nations. That mechanism is the treaty making powers. The proper oversight (the check and balance if you will) is of course the US Senate which can ratify a treaty or not. I think that the Framers found the possibility of a corrupt President to be credible, thus the need for Senate oversight. But I think they didn't and couldn't foresee the state of the nation as it appears to have become with globalization threatening as well as the degradation of the Bill of Rights, especially the 2nd Amendment. If they had seen that, they surely would have made the Bill of Rights much more specific and stronger.
Yours is the only comment in I don't know how many of these offshoring threads that makes the connection between the obliteration of the middle class via the globalization of commerce and the erosion of the Second Amendment.
The two are inexorably connected as you have obviously figured out.