I've seen arguments that government (local, state, federal) should favor US companies. I think the argument is that those companies are more likely to hire US citizens and pay US taxes but I'm not sure that is true.
A relative of mine recently heard that her whole department was going to be moved to another state. I immediately assumed she would have to move if she wanted to keep her job. She said "No. This is a European company. They value the workers more." She knows enough from experience to make the comparison. She formerly worked for two US companies (Dow Chemical and GE) that had lots of reorganizations and layoffs.
Is simply knowing that headquarters and corporate executives are based in the US enough to justify favoring US based companies? What is your experience with foreign and US based employers?