Almost all US visa applicants must send their social network data according to the new rules adopted.
The Department of State regulations says that people should send social media names and email addresses and five-year telephone numbers.
When it was proposed last year, the authorities estimated that the proposal would affect 14.7 million people annually.
Certain diplomatic and official visa applicants will be exempt from the new strict measures.
However, people who travel to the United States to work or study must provide their information.
“We are constantly working to find mechanisms that improve our screening processes to protect US citizens, while supporting legitimate travel to the United States,” the department said.
Previously, only applicants who needed additional research, such as people who had been in parts of the world controlled by terrorist groups, would have to provide this information.
But now applicants will have to give up their account names on a list of social media platforms, and also volunteer the details of their accounts anywhere that is not on the list.
According to an official who spoke with The Hill, anyone who lies about their use of social networks could face “serious immigration consequences.”
At that time, the American Civil Liberties Union, a civil rights group, said that “there is no evidence that such monitoring of social networks is effective or fair,” and said it would cause people to censor themselves online.
The president of the United States, Donald Trump, made the repression against immigration a key element of his electoral campaign in 2016.
He called for the “extreme vetation” of immigrants before and during his term.
On Friday, Mr. Trump promised to impose ever-increasing tariffs on Mexico unless the country stopped illegal immigration on the southern border of the United States.