看一個案件

https://www.fbi.gov/washingtondc/press-releases/2015/chinese-national-convicted-of-attempted-international-parental-kidnapping

美國外交部提供的樣本

http://photos.state.gov/libraries/unitedkingdom/164203/cons-acs/sample_letter_of_consent_to_travel.pdf

美國海關邊防局的回答

https://help.cbp.gov/app/answers/detail/a_id/268/~/children---child-traveling-with-one-parent-or-someone-who-is-not-a-parent-or