Originally Posted by
iamflyer
It there was an arrest or criminal charges it usually enters the FBI's NCIC which Canada has access to.
Right, but isn’t the issue that DUI is criminal in Canada but not the US? In that case, would there be an arrest or criminal conviction? And if not, how would it enter a database that CBSA could access by scanning the passport?
Having never driven drunk, let alone been ticketed or convicted of DWI, I’m blissfully ignorant of the process....