A ‘procedural fairness letter’ (left) from Canada’s Consulate General in Hong Kong, dated March 18, informs a Chinese immigration applicant that they face rejection on the basis of suspicion that they are inadmissible under section 34 (1) (f) of Canada’s immigration act, the section that bars people suspected of espionage, subversion or terrorism. The SCMP has agreed to redact identifying portions of the letter. Photo: SCMP Picture