If that's the case, you could download it from a non-US app store and it should just work...unless TikTok is doing some denial based on from IP address, then you need foreign TikTok + VPN (or at least a way to mask your IP address being American in origin). At least the USA doesn't have a great firewall (yet?), so they aren't going to block it that way (or maybe they can buy the tech from Huawei, which they adapted from Cisco in the first place).