I really wish this was more of an option for us, but it's not. Italy has the advantage of having a sea between you and the source of the illegal immigration. We share a rather large land border with our source.
Well, we're not the pioneers of that. We just happen to be the best at doing that at the moment. I think our days of this are numbered though. It's getting far too expensive to keep this tactic up. China will likely pick up the slack in the future.
Sort of... Although, China and Russia veto plenty of things as well. The Security Council essentially makes the U.N. mostly impotent with regard to real change oftentimes.