U.S. Secretary of State Rex Tillerson has directed U.S. diplomatic missions to identify "populations warranting increased scrutiny" and toughen screening for visa applicants in those groups, according to diplomatic cables seen by Reuters.
He has also ordered a "mandatory social media check" for all applicants who have ever been present in territory controlled by the Islamic State, in what two former U.S. officials said would be a broad, labor-intensive expansion of such screening. Social media screening is now done fairly rarely by consular officials, one of the former officials said.
Four cables, or memos, issued by Tillerson over the last two weeks provide insight into how the U.S. government is implementing what President Donald Trump has called "extreme vetting" of foreigners entering the United States, a major campaign promise. The cables also demonstrate the administrative and logistical hurdles the White House faces in executing its vision.
The memos, which have not been previously reported, provided instructions for implementing Trump's March 6 revised executive order temporarily barring visitors from six Muslim-majority countries and all refugees, as well as a simultaneous memorandum mandating enhanced visa screening.
The flurry of cables to U.S. missions abroad issued strict new guidelines for vetting U.S. visa applicants, and then retracted some of them in response to U.S. court rulings that challenged central tenets of Trump's executive order.
The final cable seen by Reuters, issued on March 17, leaves in place an instruction to consular chiefs in each diplomatic mission, or post, to convene working groups of law enforcement and intelligence officials to "develop a list of criteria identifying sets of post applicant populations warranting increased scrutiny."
Applicants falling within one of these identified population groups should be considered for higher-level security screening, according to the March 17 cable.