If you change your mind at the border and want to withdraw your application to enter Canada, the officer must generally let you leave. However, if a report about your admissibility has already been started or completed under subsection 44(1), you cannot simply walk away — the process continues regardless of your wish to withdraw.
(2)(2) If a report is being prepared or has been prepared under subsection 44(1) of the Act in respect of a foreign national who indicates that they want to withdraw their application to enter Canada, the officer shall not allow the foreign national to withdraw their application or leave Canada unless the Minister decides either not to make a removal order or not to refer the report to the Immigration Division for an admissibility hearing.
(3)(3) A foreign national who is allowed to withdraw their application to enter Canada must appear without delay before an officer at a port of entry to confirm their departure from Canada.