He's known as the Mr Big of trafficking and for the last few years Binjun Xie has cultivated a lavish lifestyle in Sydney off the back of human misery.

Evidence suggests that the crime syndicate boss has been exploiting women in an illegal prostitution ring here, moving them around like cattle from one hotel to another. 

But did it have to be this way? A report leaked last week reveals that Australian government authorities have failed to heed warnings about corrupt officials within our immigration and education systems, who have enabled such sex rings and human trafficking to flourish. 

Today, investigative reporter Nick McKenzie on just how easily crime bosses like Binjun Xie have been able to game our visa system, and the secret and scathing report that aims to hold them to account.

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