However, I disagree with Andy's recommendation that we should tax offshore labor - we should focus on making labor in the United States less expensive. Neuter the Department of Labor, get rid of labor regulations with heniously expensive and obnoxious unintended consequences like the mandatory 8-hour work day in California, eliminate the concept of wrongful termination, and put a muzzle on the EPA.
Negative incentives aren't the way to go to encourage job creation. Make the climate more hospitable for large businesses within the U.S. instead.