It is unclear whether travellers will be forced to present their private messages or just public social media posts. Individuals from more than 42 countries, including Australia, can currently visit the US for 90 days without a visa. They can gain entry as long as they complete an Electronic System for Travel Authorisation (ESTA) form and pay a one-off fee of $40 (AU$59). However, following an executive issued by US President Donald Trump in January this year, applicants will have to provide even more detail than previously required. #usa #australia #travel #toursim #fyp