I would predict with tighter security, those with families would be more likely to get caught (and thus recorded in the statistics). If you've ever travelled w

I would predict with tighter security, those with families would be more likely to get caught (and thus recorded in the statistics). If you've ever travelled with a child, you'll understand what I mean. Whether that means the proportion that are families is greater or less is an open question. The model being used for illegal crossing right now has changed a bit, as we have an agreement with Mexico to immediately send them back while allowing (most?) others to claim asylum and not be sent back until seen by a judge. Mexican are more likely to have single men working crossing than most other latin nations, for example. The effect is the cartels are dumping the families and "other than mexican" to intentionally get caught (they want to get caught to claim asylum. Legit asylum seekers go through the process and fakers just disappear after release), overwhelming the resources of the CBP, and then while CBP is overwhelmed the Mexicans and others like migrant workers cross the desert. Such action would seriously skew the statistics.