One of the major immigration issues is inadmissibility to Canada, which means a person may be barred from entering the country. This can occur due to various reasons, most commonly medical issues or criminal history. If an individual has been convicted of or committed a crime that has an equivalent under Canadian law, they may be considered criminally inadmissible depending on the seriousness of the offence. Not all crimes lead to inadmissibility; the offence must be of a certain level of seriousness. Common examples include DUI (driving under the influence), theft, reckless driving, and assault. A DUI conviction, in particular, can affect entry into Canada for up to 10 years after completion of the sentence, after which the person may be considered rehabilitated.