The Economy Will Probably Dominate the Presidential Race

Given the state of the national debate and the nature of the two likely candidates I think your fears of any kind of a tax cut are groundless. More like a heavy dollop of protectionism, giant taxes (some for fairness, some to Fix The Weather, which apparently has been warmed alarmingly by the evil Bush Tax cuts). The industries you fear will move overseas will merely collapse with the rest of the economy without benefiting any foreigners.

the majority of voters are clueless about the economy. the majority of voters have no more idea of what will improve the economy or ruin the economy than a 4 year old.
if their pocketbooks are hurting they will, of course, blame the government but will not know what to do about it or who to vote out.