I believe the IC's in the US on visas are very concerned about the risk of being fired and suddenly needing to find a new visa in a matter of weeks while most h

I believe the IC's in the US on visas are very concerned about the risk of being fired and suddenly needing to find a new visa in a matter of weeks while most hiring cycles take months. I don't think I've seen anyone else worry about performance reviews. I assume this is why the US visa system is structured like this.