I have been deported from Canada for one of two reasons given to me at the time.
1) Suspicion of illegal immigration (they were under the impression that I was trying to move there as I had 2 suit cases with me and one contained my work tools.
2) Suspicion of Intent to Commit Nefarious Acts. This one is my favorite. They found a receipt for the first bolt action rifle I was having built in some of my forms. Their assumption, who knows.
In my mind, is that I was there to perform contract killing(s).
So after 20 something hours on flights starting in Korea, thru Japan, thru San Fran, I was deported from Canada and sent back to San Fran. That was a long assed day.