I've been asking for over two weeks now. I've left my 3DS on for weeks straight utilizing Street Passes 24/7 in which my MAC Address changes every two weeks. My Mii is WiiDSmoker I'm begging, pleading, someone help me complete all USA regions. You do this by changing your region setting in the 3DS Settings Menu. Then we StreetPass each other, then change it again. I just have ONLY 6 locations left, so it will not take much time if I'm able to work with a single person or multiple people Montana North Dakota South Dakota Nebraska Oklahoma Louisiana I would also definitely help you complete all USA regions as well to get the achievement.