Well, there goes Microsoft's reputation.
However Balmer does have a point. If its not worth it for the company to do business in the US, then why should it? This stupid idea of "nationalism" only works for the stupid masses. To a business its where the money is.
The government right now is not making good policies to make shit not fuck up, they are just throwing money at the problem. Someone has to pay that money. Microsoft does not want to be that someone.