Can Americans use Huobi?

Could you please clarify for me if American citizens are able to utilize the services of Huobi, a cryptocurrency exchange platform? I've heard differing opinions on the matter and I'm seeking a definitive answer. Is there any specific regulation or restriction in place that would prevent Americans from accessing or trading on Huobi? Additionally, are there any alternative platforms that cater specifically to American users, in case Huobi is indeed inaccessible?