如果发现有害国家安全的信息，蓝皮会被revoke。 https://www.dailymail.co.uk/news/article-9927283/amp/DHS-software-hosted-
Amazon-scans-immigrants-records-potentially-citizenship-REVOKED.html
The Department of Homeland Security use a computer program called ATLAS
ATLAS will search an immigrant's biometric data, social media and other '
flags'
Activists filed FOIA requests seeking more information on how ATLAS works
The DHS refused to explain how the system operates and by what criteria
Immigration advocates worry it uses too broad a net to search for warning
signs
