How to prevent "radish recruitment" in American civil service examination?

American civil servants don't need anti-radish recruitment, because they don't want to join civil servants, they are willing to fight hard, even if they are eliminated by enterprises.

Different national conditions. Just as American students don't have Internet addiction, they regard surfing the Internet as one of their lives and actively gain benefits. Unlike China students, they are under too much pressure and fall in love with a hobby easily.