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Chinese Spy 'Slept' In U.S. for 2 Decades

Prosecutors called Chi Mak the "perfect sleeper agent," though he hardly looked the part. For two decades, the bespectacled Chinese-born engineer lived quietly with his wife in a Los Angeles suburb, buying a house and holding a steady job with a U.S. defense contractor, which rewarded him with...

By Joby Warrick and Carrie Johnson

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