favorable tax laws != favorable business laws
To what extent will a government go to protect your investment/property? Are you big enough where the potential for loss is an acceptable risk? If so and your business is very liquid and global then I see no problem in having an HQ elsewhere. What do you care where their HQ is? Most likely, their investors are still collecting profits in the US. The saved money from taxes drives up equity, reinvestment, research and development. Am I crazy for not caring where a business is centered? I guess I don't watch enough Lou Dobbs.