Espinoage Context News Today

Mcfadden has the details >> reporter: edward peng is in custody tonight, a naturalized american citizen, who worked as a tour guide in san francisco, despite receiving a degree in mechanical engineering in china. >> the chinese are the number one intelligence threat to the united states right now. >> reporter: no question? >> no question the russians are up there for sure but the chinese are number one and also the number one threat in the political espinoage context. >> reporter: the criminal c...