Although family members sometime engage in monitoring as an extension of governmental surveillance, they also monitor each other, other families, and their own borders to preserve norms about what a family should be and what family members should do. Whether it is the seemingly benign surveillance of using baby monitors, the more obviously intrusive use of home drug tests on teenagers, or the way people in public feel free to judge and comment on the family composition of others, monitoring goes on all the time — and even (or maybe especially) when there seems to be no monitoring going on at all.