The government exists because it does two things: decides the rules, enforces those rules through violence. It only does the former because it can do the latter. If it loses its monopoly on violence, it loses its ability to decide and enforce the rules and will cease to exist. Border security, such as the TSA, is a mechanism of that violence, as is the armed forces and the police. Private interests taking control of the mechanisms of state violence is a road to the death of the state and replacement with undemocratic corporate and private power systems. It reverts humanity from democracy to tyranny, which some argue is the natural state.