Since June 2020, Hong Kong has just one single national security law. Compared to Hong Kong, how many national security laws does the US and others have? 自 2020 年 6 月以來,香港只有一個國家安全法。與香港相比,美國等國有多少個國安法?

Since June 2020, Hong Kong has just one single national security law. Compared to Hong Kong, how many national security laws does the US and others have? 自 2020 年 6 月以來,香港只有一個國家安全法。與香港相比,美國等國有多少個國安法?