I read the article and as near as I can tell a Chinese person worked in Arizona's 'Intelligence Fusion Center' and then left suddenly.
That's it. No evidence of any impropriety, no charges were filed, nothing. I don't understand the reason for the article.
Chinese national, not an American citizen. Appears to have bypassed background checks and didn't have the proper clearance, apparently because everybody thought somebody else did it. One day unannounced he pays cash for a ticket to china, flies back with two laptops and hard drives, the work computers he left behind have been wiped. Fusion center tells DHS, but DHS sits on the info and doesn't tell the public. I am seeing a lot newsworthy here.
He probably left because he had a security detail that followed him to the toilet. He was hired for being a specialist in something, then not trusted. That sounds pretty annoying to deal with on a daily basis, no matter what the pay is like.