Secretary of State Rex Tillerson has moved to dramatically tighten rules on issuing U.S. visas. In diplomatic cables sent last week, the State Department ordered U.S. embassies to ask detailed questions to visa applicants about their personal history. The rules also require a check of phone and email contacts, as well as the social media history of anyone who’s traveled in a country where ISIS controls territory. The restrictions will not apply to most European countries, nor to Australia, New Zealand, Japan and South Korea.