Travelers to the US from more than three dozen countries could soon be required to submit their most recent five years of social media activity for review before being allowed in.

A proposal filed Tuesday by US Customs and Border Protection would require social media scrutiny of any potential visitor applying for so-called electronic travel authorization — which allows people from 42 countries to spend up to 90 days in the US without a visa.

The requirement is set to go into effect early next year, months before thousands of foreigners are expected to travel to the US to attend World Cup soccer matches.

Under the current system, applicants from countries in the visa waiver program must provide a home address, phone number, email address and emergency contact information, along with a $4

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