Let's see: one traveler who was denied entry was found in a picture with a jihadi - no brainer. CSIS should keep watch on him. Another one was a drug dealer many years ago. Got a pardon. Maybe the border agents found traces of drugs or some other indication he was back in the trade. We don't trust authorities a lot, but between a border officer and a convicted drug dealer I trust the border guy.

Third traveler is the well known young Montrealer. Ofcourse, Globe conveniently leaves out the fact that she was denied entry in December and attempted crossing again without clarifying her situation (her family situation  seems to make the border officers doubt her status as visitor).

Based on these examples we can conclude it is business as usual at the border.