Story highlights All refugees except those with a relationship to the US were previously blocked

"Mining" social media for more information about the applicants is likely

Washington (CNN) As President Donald Trump's travel ban restrictions expire, the administration will allow in refugees from all countries -- but with new, enhanced vetting rules, the administration announced Tuesday.

Trump signed the new executive order on Tuesday. Under the new rules, the administration will collect more biographical data on refugees and scrutinize their social media in addition to taking other measures to look for fraud, officials said on a call to brief reporters.

The move comes as the 120-day pause on refugee admissions under Trump's earlier travel ban expires. But there will be a second 90-day review of 11 unnamed countries determined to be of higher risk, officials said.

Those 11 countries remain secret because of "law enforcement sensitivities," but were chosen as being of "higher risk" based on the visa clearance process established in 2001 and last revised in 2015, a senior administration official said on the call.

People from those countries will not be barred from entering the United States during the 90-day review, but will be admitted on a case-by-case basis only "if their admission is deemed to be in the national interest and poses no threat to the security or welfare of the United States," a senior administration official said.

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