China earlier this year ordered the dispatch of 27 intelligence officers to the United States as part of a larger campaign of subversion, according to a leading Chinese dissident. Guo Wengui, a billionaire real estate mogul, disclosed what he said was an internal Communist Party document authorizing the Ministry of State Security to send the spies, described as "people's police officers." Guo, who is being sought by the Chinese government in a bid to silence his disclosures of high-level corruption and intelligence activity, denounced the Beijing regime as corrupt and called for a "revolution" to reform the system. "My only...