I visit many website to know about the criteria for international travel from the USA. Then I found an excellent website that explains the perfect guidelines and requirement given for travel to and from the USA.
https://click2visas.com/us/usa-srila...y-transit-visa
https://click2visas.com/us/blog/usa-...r-us-citizens/
https://click2visas.com/us/blog/indi...-need-to-know/
https://click2visas.com/us/usa-new-z...to-new-zealand