Reasons for Inadmissibility to Canada
You may be considered inadmissible to Canada because you have been convicted of a crime, previously been deported, or for medical reasons.
In Canada, there are three grounds for medical exclusion: risk to public health, the risk to public safety, and excessive demand for medical or social services. Anyone can be impacted by this process, but it can be stopped.
If you have committed a crime, you could not be able to enter Canada. Major offences fall under this category. You must first compare the offence to Canada's Criminal Code to establish whether your conviction prevents you from being admitted.