We've not seen many but we've seen some, and when I say some, again, this is not information collected through devices.
The example I have in mind is a public example of a lady whose information was collected by a police service in Canada during a crisis that she was under, a suicide attempt, when she called 911. That information becomes part of police records, and that information is then disclosed to U.S. border authorities in the name of co-operation between the law enforcement bodies of Canada and the U.S. It led to the refusal by U.S. officers, who did not let her in because they felt that she was at risk of either committing suicide or somehow endangering U.S. people.
That was as a result of this 911 call, but the same could happen through the search of an electronic device that would reveal a medical condition, for instance.