Miller also noted on Saturday that Trump administration officials are discussing the possibility of asking foreign visitors to disclose all websites and social media sites they visit, and to share the contacts in their cell phones. If the foreign visitor declines to share such information, he or she could be denied entry. Sources told CNN that the idea is just in the preliminary discussion level. The social media posts calling for jihad by San Bernardino terrorist Tashfeen Malik — made under a pseudonym and with strict privacy settings — are part of this discussion. How such a policy would be implemented remains under discussion.