The Trump administration has implemented a new policy, effective Friday, that asks most US visa applicants to provide information on their use of social media. Even temporary visitors will be required to list their social media identifiers in a drop-down menu, along with other personal information, when applying according to The Hill. Applicants for visas will be given the option to say that they don’t use social media, but if they are found to be lying, they could face "serious immigration consequences", according to a U.S. Department of State official.

A spokesperson for the Department of State said: “This is a critical step forward in establishing enhanced vetting of foreign nationals seeking entry into the United States. As we’ve seen around the world in recent years, social media can be a major forum for terrorist sentiment and activity. This will be a vital tool to screen out terrorists, public safety threats, and other dangerous individuals from gaining immigration benefits and setting foot on U.S. soil."

These identifiers will be incorporated into more traditional background checks and examined against watchlists that are generated by the US government. In the future, applicants are also going to be required to disclose more extensive information on their travel history. These two changes result from a March 2017 executive order targeting "extreme vetting", issued by President Trump. The state department had since noted its intent to implement the policy in March 2018.

The order is partly the result of the deadly shooting of 14 people in San Bernardino, California in 2015. The Obama administration faced criticism after the shooting since the shooter's wife, Tashfeen Malik, had declared "terrorist sympathies" on social media before she was granted a U.S. visa.

Trump's executive order is called "Protecting The Nation From Foreign Terrorist Entry Into The United States."