Who's being left out of the World Cup?

The Take Who's being left out of the World Cup? Can football's biggest stage stay global as visa denials and border restrictions mount? The excitement of the World Cup has arrived in North America. But behind it have been stories of fans being denied visas, players being searched by sniffer dogs, and Iran's team being forced to base itself outside the US. What happens when a global tournament collides with US President Donald Trump's immigration policies? How is China using AI in the classroom?