Britain is driving corporations out of the country with uncertainty due to green regulations and tax policy:

http://www.iht.com/articles/2008/09/04/business/uktax.php

We are going to see more of that in the US also. The Democrats have already driven Halliburton out of the US. If Obama is elected President I expect a wholesale retreat. Even if McCain is elected, the Democrats in control of Congress will pass regulation and tax increases that encourage companies to leave.