The act which allows the FBI to access this kind of information from the suspected terrorist is:
This refers to a controversial legislation that was passed by the government of America to assess threats to their domestic base from external aggressors just after the 9/11 attacks.
With this in mind, we can see that because of the Patriot Act, the FBI would be able to get access to the personal information of a suspected terrorist who is in the country on a temporary visa.
Read more about Patriot Act here:
https://brainly.com/question/16298222