"We want to get on their social media, with passwords: What do you do, what do you say?" said Kelly. "If they don't want to cooperate then you don't come in."
US customs agents may require foreigners' social media passwords as part of vetting
Secretary of Homeland Security John Kelly told the House Committee on Homeland Security on Tuesday that the Trump administration may move to require foreign visitors to give over the passwords to their social media accounts, NBC reported.
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Kelly said that the idea was in its preliminary stages, and that the White House was considering several additional vetting measures.
This proposal echoes an earlier idea floated by may compel US customs officials and border patrol agents to ask foreign visitors to provide their cell phone contacts upon entering the US.
The move would fall under Trump's now suspended executive order temporarily barring refugees and visa holders from six Muslim-majority countries —from entering the US, according to CNN. Syrians have been banned indefinitely.
The idea of checking foreigners' social media posts, which remains limited to a preliminary discussion, draws on a supposed history of terror attacks where the attacker had previously expressed extremist views on platforms like Facebook and Twitter.
Some have pointed to the San Bernardino terror attack as evidence that such a policy might be useful: An FBI document produced shortly after the shooting said that the woman who helped carry it out pledged allegiance to ISIS while the attack was ongoing. FBI director James Comey later confirmed, however, that the attackers —
Natasha Bertrand contributed reporting.