Unaccompanied minors continue to stream across the US-Mexico border, fleeing violence, and they are being held at detention centers. In the US, a debate is raging over whether this is a humanitarian issue about taking care of needy children or a border security and immigration problem to be solved.Unaccompanied minors continue to stream across the US-Mexico border, fleeing violence, and they are being held at detention centers. In the US, a debate is raging over whether this is a humanitarian issue about taking care of needy children or a border security and immigration problem to be solved.