55 million US visa holders under review as Trump admin intensifies immigration crackdown

In a written answer to AP, the US State Department said all US visa holders, including tourists, are now under "continuous vetting". IN case any violation is found, the visa will be revoked and the person will be considering "ineligible" to visit the US.

If the person is in the United States, the visa holder will then be deported to their home country.

The State Department said it was looking for indicators of ineligibility, including people staying past the timeframe outlined in a visa, criminal activity, threats to public safety, engaging in any form of terrorist activity or providing support to a terrorist organisation.

“We review all available information as part of our vetting, including law enforcement or immigration records or any other information that comes to light after visa issuance, indicating a potential ineligibility,” said the State Department.