As an H1-B visa holder in a right to work state, my presence here is dictated by either the benevolence of my employer or by my own duplicitousness when I carefully conceal my interviews with other firms.
People do want the right to work, and also want to have employment at will. They are generally patriots, wish communication was more decent, and would love to be allowed to trade freely.
And at first blush, people might react negatively to at-will employment states, but the devil is in the details on proposals to replace at-will employment.