Unsurprisingly, I guess they would somehow allow VPN usage, but then again we don't know not unless September is here and Americans are barred from using the main site. But for the safe side, I suggest not to do it, especially with high volume of trades (even if one is fully verified) just in case. Huobi Global is also there just like you've mentioned, and they are pretty much an OK exchange that doesn't require KYC to withdraw, and boy $1000/day is still a doable amount to work with especially if one is not really a high-volume trader and/or just dealing with newer altcoins/projects.

The transitioning of Binance into making its own subsidiary/branch/whatever catered specifically for US residents would be an interesting sight to see. It seems like they are serious into expanding the brand and do not want to lose their American customer-base just for this silly regulation.