Why can t Americans use KuCoin?

Why can't Americans use KuCoin? Could you please elaborate on the reasons behind this? I'm quite curious about the regulations or policies that might be preventing US citizens from accessing this platform. Could it be due to specific legal constraints in the United States? Or is it more related to KuCoin's decision to limit its services in certain regions? Additionally, are there any alternative platforms that Americans can utilize for cryptocurrency trading? It would be great if you could provide some insights into this matter.