Look from an overall standpoint it would be much easier to carry out a hit or another serious crime and not get in trouble by using zips coming from Italy then it would using a local guy correct?

From a logical standpoint this is a no brainer. You get a capable guy who is a true professional that comes over from Italy, no one knows who the fuck he is. No one even knows the guys name. Once the job is done, he goes back to Italy or another part of the world never to be seen on U.S. Soil again.