Why is Gate.io not working in the USA?

Could you elaborate on the reasons behind Gate.io's inability to operate in the United States? There seems to be a growing demand for cryptocurrency exchanges in the US market, so what specific challenges or regulations are preventing Gate.io from entering this lucrative space? Could it be due to strict licensing requirements, security concerns, or is there another underlying factor that we're unaware of? Understanding these nuances would help investors and traders alike make informed decisions about which platforms to use for their crypto transactions.