However, there are times that the trip of a lifetime presents itself, or you need to travel to Canada on business. In that instance one can apply for Deemed or Streamlined Rehabilitation at the Canadian ports of entry. However, submitting an application for rehabilitation doesn’t guarantee that the request will be approved. Should you wish to apply, you must bring all supporting documents to a port of entry during regular business hours. If you live near Seattle, International Falls, Detroit, or Buffalo this may make sense, but it’s risky to travel a great distance and chance this means of entry.
If a person somehow enters Canada and decides to retroactively apply for a temporary permit, they may be asked to leave the country. Regardless, if one is caught in Canada and is found to have been inadmissible in the first place, that person risks deportation and future denials of entry.