New Zealand welcomed tourists from the U.S., Canada, Britain, Japan and more than 50 other countries for the first time in more than two years.
One Ukrainian family was allowed to enter the U.S. after being denied entry under border restrictions known as Title 42. The Biden administration faces renewed pressure to end the Trump-era policy.
An analysis by NPR finds many nations are tossing aside international health regulations and imposing strict travel restrictions. Experts say the benefits are likely to be small.
Following Slovenia's border restrictions, Serbia and Croatia also closed their frontiers to most migrants trying to reach Europe through the Balkans.