Upvote:4
I moved from Budapest, Hungary to Vancouver, BC, Canada and continued to use my ten year B1/B2 visa for a good eight years more with more border crossings than I am comfortable to admit (there was that week when I landed home on Monday and was already on a plane back to the USA on Thursday. Fun times). I didn't report this residency change, never got told to report it despite I was even in secondary once.