樓主叫美國朋友簽名
Extradition Law Amendment in Hong Kong - Threat to Personal Safety and Freedom (Deadline: 14 June 2019; Progress: 63.3%)
https://petitions.whitehouse.gov/petition/extradition-law-amendment-hong-kong-threat-personal-safety-and-freedom
Remarks: Threat to Personal Safety and Freedom of US Citizens in HK