OK, one thing is the border worlds, like the Omegas where they are resident and are free to be neutral to everyone and their mothers and another is Pennsylvania, not a border system and one that is under Liberty control.
All of that equals to 0 the moment they decided to abuse the privilege and take enemies of Liberty on their grounds. Its quite easy, because Houses don't give a rats ass about their neutrality or motives when their security is at stake.
As we say at home, "you've made your bed, now you'll sleep in it." Good luck.