This week, many foreign travelers were finally allowed to come into the US after a year and a half of intense travel restrictions. But across the ocean, in New Zealand, the scene is very different. The island nation has been one of the most closed-off places in the world, even for citizens to reenter. The overall situation has been challenging for separated families, like Roshni Sami and Walter Spears. As The World’s Elana Gordon reports, it’s raising uneasy questions about the human costs of keeping out COVID-19.