In this task, given a sentence in the English language, your task is to convert it into the Chinese language.
Q: The spies arrested by the US all pled guilty to charges of "conspiracy to act as an unregistered agent of a foreign country."
A: 
被美国逮捕的间谍都承认犯有“担任外国未经注册代理人的阴谋”的指控。