Back when SB was doing the College of Distance Education thing at the NWC, I used to read along with whatever open source material was available. I remember reading the definition of a failed state during the Joint Maritime Operations (JMO) phase.
An important criteria was "failure to control it's borders".
Say what you will about immigration laws and illegal immigration. Argue about the effects on our economy, justice system and social support system.
But all that aside...........
The United States must control it's borders.
Go watch the vid over at the Castle.