cjc2 wrote:
Having a non-usa version is not necessarily a prescription for doom and gloom. You save a few bucks and take your chance. It can be serviced, including under warranty, but you might have to send it out-of-country for that to happen. If you feel lucky and don't hammer your gear, it might work for you. For me, usa is worth the extra, but for you, perhaps not. Best of luck!
Having a USA version is no different from any other genuine Nikon lens supplied anywhere in the world.