If your neighbor builds his doghouse on somebody else’s property in another state, that person has standing to sue your neighbor if that person objects - but you have no standing or legal recourse to sue the neighbor.
Setting aside the cross-state aspect for a moment, let me try a similar hypothetical:
If your neighbor built a shed on his property that violated building codes because he got a buddy at city hall to overlook the codes and approve his build after you wanted to build a similar shed and was rejected earlier, can your downstreet neighbor sue because he is afraid that his other neighbor will now want to build a shed just like the other one that was illegally approved?
-PJ
The hypotheticals can be pretty interesting illustrations of real scenarios.