What is this scam? How do I determine if this is a scam?

Foreign language robocalls can be dangerous, especially to immigrants and non English speakers. One variety of this robocall targeted recent Chinese immigrants, and threatened legal trouble unless a large payment was made. These scammers capitalize on the targets' fear of deportation and consequences from the US and their home governments. Always be wary of any official government business conducted over the phone. Government agencies around the world prefer to communicate in writing.