Both have jump gates on either side that are owned/controlled by either Liberty or Kusari.
Jump Gates are expensive pieces of equipment and having those two systems relatively safe for people to travel in is an important thing for both Liberty and Kusari.
Maybe the Liberty and Kusari government might get together and think of a solution to the problem.
How about having Liberty and Kusari forces do some sort of patrols near the gates in those systems?
Of course, part of their duties might also be patrolling of the lanes.
I'm just throwing an idea out there and hoping it sticks in somebodies head.