Trying to prevent jobs going to cheaper labour markets is a fruitless endeavour. When the FTA agreement came into effect, Canada got clobbered. We had to dramatically reduce (and sometimes eliminate) tarriffs which led to many American companies pulling out and manufacturing at home. All of this happened during the recession of the early nineties, so you can imagine the impact. My father lost his job as a direct consequence of free trade. However, in hindsight, I'm glad that Canadians went through that when we did, and we're much better off for it now. Globalisation is an inevitable consequence of capitalism, and will eventually lead to an increase in the standard of living for people in developing countries. (If, and only if, the WTO does it's job properly and ignores the economic weight of the G-7, and if the IMF and World Bank grant voting rights by population. Given the uprising against these organisations, I see this happening.) Protectionist tax breaks or other incentives by the American gov't will only lead to isolation, and a resentment by international consumers, which could be equally damaging.
Moving jobs to overseas markets will hurt for a while, but it's funny how the economy tends to adjust itself. Businesses who sell in your market will of course understand that their markets will shrink uncontrollably if jobs are not created at home ... Lou Dobbs needs to take a gander at the bigger picture.