“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.”
This is a completely idiotic move. I don’t think the US Government has the resources to do this, and it’s clearly impractical at airports. The building of an electronic wall around the USA starts with nonsense like this.