The United States could begin requiring visitors to provide up to five years of their social media history under a new proposal that would significantly expand screening for international travelers.

The requirement would affect travelers from countries participating in the Visa Waiver Program, including Australia, Britain, France, Germany, Israel, Japan and South Korea. These visitors would need to provide their social media history when applying for Electronic System for Travel Authorization (ESTA) travel authorization.

U.S. Customs and Border Protection published the proposal in the Federal Register , marking a potential major expansion of social media screening for international visitors.

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