US Investigated Threat Posed by Chinese Regime Infiltration of Canada: Intelligence Professional

The city of Vancouver is "ground zero" for activities of the Chinese Communist Party's United Front Word Department, according to former Mountie and author Scott McGregor. The Canadian Press/Darryl Dyck

The infiltration of Canada by the Chinese Communist Party was so serious that the U.S. government launched an investigation into the matter, says an intelligence professional and author of a new book on the topic.

And that was 25 years ago, with the situation reportedly getting progressively worse over time.