The State Department regulations say people will have to submit social media names and five years’ worth of email addresses and phone numbers.
When proposed last year, authorities estimated the proposal would affect 14.7 million people annually.
Certain diplomatic and official visa applicants will be exempt from the stringent new measures.
However, people travelling to the US to work or to study will have to hand over their information.
. “We are constantly working to find mechanisms to improve our screening processes to protect US citizens, while supporting legitimate travel to the United States,” the department reportedly said.
The #Trump administration first proposed the rules in March 2018.
At the time, the American Civil Liberties Union – a civil rights group – said there is “no evidence that such social media monitoring is effective or fair”, and said it would cause people to self-censor themselves online.